gbm.c

   1 /*
   2  * Copyright (c) 2014 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
   7 #include <fcntl.h>
   8 #include <stdint.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <xf86drm.h>
  13
  14 #include "gbm_priv.h"
  15 #include "helpers.h"
  16 #include "util.h"
  17
  18 extern struct gbm_driver gbm_driver_cirrus;
  19 #ifdef GBM_EXYNOS
  20 extern struct gbm_driver gbm_driver_exynos;
  21 #endif
  22 extern struct gbm_driver gbm_driver_gma500;
  23 #ifdef GBM_I915
  24 extern struct gbm_driver gbm_driver_i915;
  25 #endif
  26 #ifdef GBM_MARVELL
  27 extern struct gbm_driver gbm_driver_marvell;
  28 #endif
  29 #ifdef GBM_MEDIATEK
  30 extern struct gbm_driver gbm_driver_mediatek;
  31 #endif
  32 #ifdef GBM_ROCKCHIP
  33 extern struct gbm_driver gbm_driver_rockchip;
  34 #endif
  35 #ifdef GBM_TEGRA
  36 extern struct gbm_driver gbm_driver_tegra;
  37 #endif
  38 extern struct gbm_driver gbm_driver_udl;
  39
  40 static struct gbm_driver *gbm_get_driver(int fd)
  41 {
  42         drmVersionPtr drm_version;
  43         unsigned int i;
  44
  45         drm_version = drmGetVersion(fd);
  46
  47         if (!drm_version)
  48                 return NULL;
  49
  50         struct gbm_driver *driver_list[] = {
  51                 &gbm_driver_cirrus,
  52 #ifdef GBM_EXYNOS
  53                 &gbm_driver_exynos,
  54 #endif
  55                 &gbm_driver_gma500,
  56 #ifdef GBM_I915
  57                 &gbm_driver_i915,
  58 #endif
  59 #ifdef GBM_MARVELL
  60                 &gbm_driver_marvell,
  61 #endif
  62 #ifdef GBM_MEDIATEK
  63                 &gbm_driver_mediatek,
  64 #endif
  65 #ifdef GBM_ROCKCHIP
  66                 &gbm_driver_rockchip,
  67 #endif
  68 #ifdef GBM_TEGRA
  69                 &gbm_driver_tegra,
  70 #endif
  71                 &gbm_driver_udl,
  72         };
  73
  74         for(i = 0; i < ARRAY_SIZE(driver_list); i++)
  75                 if (!strcmp(drm_version->name, driver_list[i]->name))
  76                 {
  77                         drmFreeVersion(drm_version);
  78                         return driver_list[i];
  79                 }
  80
  81         drmFreeVersion(drm_version);
  82         return NULL;
  83 }
  84
  85 PUBLIC int
  86 gbm_device_get_fd(struct gbm_device *gbm)
  87 {
  88         return gbm->fd;
  89 }
  90
  91 PUBLIC const char *
  92 gbm_device_get_backend_name(struct gbm_device *gbm)
  93 {
  94         return gbm->driver->name;
  95 }
  96
  97 PUBLIC int
  98 gbm_device_is_format_supported(struct gbm_device *gbm,
  99                                uint32_t format, uint32_t usage)
 100 {
 101         unsigned i;
 102
 103         if (format == GBM_BO_FORMAT_XRGB8888)
 104                 format = GBM_FORMAT_XRGB8888;
 105         if (format == GBM_BO_FORMAT_ARGB8888)
 106                 format = GBM_FORMAT_ARGB8888;
 107
 108         if (usage & GBM_BO_USE_CURSOR &&
 109                 usage & GBM_BO_USE_RENDERING)
 110                 return 0;
 111
 112         for(i = 0 ; i < ARRAY_SIZE(gbm->driver->format_list); i++)
 113         {
 114                 if (!gbm->driver->format_list[i].format)
 115                         break;
 116
 117                 if (gbm->driver->format_list[i].format == format &&
 118                         (gbm->driver->format_list[i].usage & usage) == usage)
 119                         return 1;
 120         }
 121
 122         return 0;
 123 }
 124
 125 PUBLIC struct gbm_device *gbm_create_device(int fd)
 126 {
 127         struct gbm_device *gbm;
 128         int ret;
 129
 130         gbm = (struct gbm_device*) malloc(sizeof(*gbm));
 131         if (!gbm)
 132                 return NULL;
 133
 134         gbm->fd = fd;
 135
 136         gbm->driver = gbm_get_driver(fd);
 137         if (!gbm->driver) {
 138                 free(gbm);
 139                 return NULL;
 140         }
 141
 142         if (gbm->driver->init) {
 143                 ret = gbm->driver->init(gbm);
 144                 if (ret) {
 145                         free(gbm);
 146                         return NULL;
 147                 }
 148         }
 149
 150         return gbm;
 151 }
 152
 153 PUBLIC void gbm_device_destroy(struct gbm_device *gbm)
 154 {
 155         if (gbm->driver->close)
 156                 gbm->driver->close(gbm);
 157         free(gbm);
 158 }
 159
 160 PUBLIC struct gbm_surface *gbm_surface_create(struct gbm_device *gbm,
 161                                               uint32_t width, uint32_t height,
 162                                               uint32_t format, uint32_t flags)
 163 {
 164         struct gbm_surface *surface =
 165                 (struct gbm_surface*) malloc(sizeof(*surface));
 166
 167         if (!surface)
 168                 return NULL;
 169
 170         return surface;
 171 }
 172
 173 PUBLIC void gbm_surface_destroy(struct gbm_surface *surface)
 174 {
 175         free(surface);
 176 }
 177
 178 PUBLIC struct gbm_bo *gbm_surface_lock_front_buffer(struct gbm_surface *surface)
 179 {
 180         return NULL;
 181 }
 182
 183 PUBLIC void gbm_surface_release_buffer(struct gbm_surface *surface,
 184                                        struct gbm_bo *bo)
 185 {
 186 }
 187
 188 static struct gbm_bo *gbm_bo_new(struct gbm_device *gbm,
 189                                  uint32_t width, uint32_t height,
 190                                  uint32_t format, uint32_t stride)
 191 {
 192         struct gbm_bo *bo;
 193
 194         bo = (struct gbm_bo*) malloc(sizeof(*bo));
 195         if (!bo)
 196                 return NULL;
 197
 198         bo->gbm = gbm;
 199         bo->width = width;
 200         bo->height = height;
 201         bo->stride = stride;
 202         bo->format = format;
 203         bo->handle.u32 = 0;
 204         bo->destroy_user_data = NULL;
 205         bo->user_data = NULL;
 206
 207         return bo;
 208 }
 209
 210 PUBLIC struct gbm_bo *gbm_bo_create(struct gbm_device *gbm, uint32_t width,
 211                                     uint32_t height, uint32_t format,
 212                                     uint32_t flags)
 213 {
 214         struct gbm_bo *bo;
 215         int ret;
 216
 217         bo = gbm_bo_new(gbm, width, height, format,
 218                         width * gbm_bytes_from_format(format));
 219         if (!bo)
 220                 return NULL;
 221
 222         ret = gbm->driver->bo_create(bo, width, height, format, flags);
 223         if (ret) {
 224                 free(bo);
 225                 return NULL;
 226         }
 227
 228         return bo;
 229 }
 230
 231 PUBLIC void gbm_bo_destroy(struct gbm_bo *bo)
 232 {
 233         if (bo->destroy_user_data) {
 234                 bo->destroy_user_data(bo, bo->user_data);
 235                 bo->destroy_user_data = NULL;
 236                 bo->user_data = NULL;
 237         }
 238
 239         bo->gbm->driver->bo_destroy(bo);
 240         free(bo);
 241 }
 242
 243 PUBLIC struct gbm_bo *
 244 gbm_bo_import(struct gbm_device *gbm, uint32_t type,
 245               void *buffer, uint32_t usage)
 246 {
 247         struct gbm_import_fd_data *fd_data = buffer;
 248         struct gbm_bo *bo;
 249         struct drm_prime_handle prime_handle;
 250         int ret;
 251
 252         if (type != GBM_BO_IMPORT_FD)
 253                 return NULL;
 254
 255         if (!gbm_device_is_format_supported(gbm, fd_data->format, usage))
 256                 return NULL;
 257
 258         bo = gbm_bo_new(gbm, fd_data->width, fd_data->height, fd_data->format,
 259                         fd_data->stride);
 260         if (!bo)
 261                 return NULL;
 262
 263         prime_handle.fd = fd_data->fd;
 264
 265         ret = drmIoctl(bo->gbm->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
 266         if (ret) {
 267                 fprintf(stderr, "minigbm: DRM_IOCTL_PRIME_FD_TO_HANDLE failed "
 268                                 "(fd=%u)\n", prime_handle.fd);
 269                 free(bo);
 270                 return NULL;
 271         }
 272
 273         bo->handle.u32 = prime_handle.handle;
 274
 275         return bo;
 276 }
 277
 278 PUBLIC uint32_t
 279 gbm_bo_get_width(struct gbm_bo *bo)
 280 {
 281         return bo->width;
 282 }
 283
 284 PUBLIC uint32_t
 285 gbm_bo_get_height(struct gbm_bo *bo)
 286 {
 287         return bo->height;
 288 }
 289
 290 PUBLIC uint32_t
 291 gbm_bo_get_stride(struct gbm_bo *bo)
 292 {
 293         return bo->stride;
 294 }
 295
 296 PUBLIC uint32_t
 297 gbm_bo_get_stride_or_tiling(struct gbm_bo *bo)
 298 {
 299         return bo->tiling ? bo->tiling : bo->stride;
 300 }
 301
 302 PUBLIC uint32_t
 303 gbm_bo_get_format(struct gbm_bo *bo)
 304 {
 305         return bo->format;
 306 }
 307
 308 PUBLIC struct gbm_device *
 309 gbm_bo_get_device(struct gbm_bo *bo)
 310 {
 311         return bo->gbm;
 312 }
 313
 314 PUBLIC union gbm_bo_handle
 315 gbm_bo_get_handle(struct gbm_bo *bo)
 316 {
 317         return bo->handle;
 318 }
 319
 320 PUBLIC int
 321 gbm_bo_get_fd(struct gbm_bo *bo)
 322 {
 323         int fd;
 324
 325         if (drmPrimeHandleToFD(gbm_device_get_fd(bo->gbm),
 326                                 gbm_bo_get_handle(bo).u32,
 327                                 DRM_CLOEXEC,
 328                                 &fd))
 329                 return -1;
 330         else
 331                 return fd;
 332 }
 333
 334 PUBLIC void
 335 gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
 336                      void (*destroy_user_data)(struct gbm_bo *, void *))
 337 {
 338         bo->user_data = data;
 339         bo->destroy_user_data = destroy_user_data;
 340 }
 341
 342 PUBLIC void *
 343 gbm_bo_get_user_data(struct gbm_bo *bo)
 344 {
 345         return bo->user_data;
 346 }