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 extern struct gbm_driver gbm_driver_evdi;
  20 #ifdef GBM_EXYNOS
  21 extern struct gbm_driver gbm_driver_exynos;
  22 #endif
  23 extern struct gbm_driver gbm_driver_gma500;
  24 #ifdef GBM_I915
  25 extern struct gbm_driver gbm_driver_i915;
  26 #endif
  27 #ifdef GBM_MARVELL
  28 extern struct gbm_driver gbm_driver_marvell;
  29 #endif
  30 #ifdef GBM_MEDIATEK
  31 extern struct gbm_driver gbm_driver_mediatek;
  32 #endif
  33 #ifdef GBM_ROCKCHIP
  34 extern struct gbm_driver gbm_driver_rockchip;
  35 #endif
  36 #ifdef GBM_TEGRA
  37 extern struct gbm_driver gbm_driver_tegra;
  38 #endif
  39 extern struct gbm_driver gbm_driver_udl;
  40
  41 static struct gbm_driver *gbm_get_driver(int fd)
  42 {
  43         drmVersionPtr drm_version;
  44         unsigned int i;
  45
  46         drm_version = drmGetVersion(fd);
  47
  48         if (!drm_version)
  49                 return NULL;
  50
  51         struct gbm_driver *driver_list[] = {
  52                 &gbm_driver_cirrus,
  53                 &gbm_driver_evdi,
  54 #ifdef GBM_EXYNOS
  55                 &gbm_driver_exynos,
  56 #endif
  57                 &gbm_driver_gma500,
  58 #ifdef GBM_I915
  59                 &gbm_driver_i915,
  60 #endif
  61 #ifdef GBM_MARVELL
  62                 &gbm_driver_marvell,
  63 #endif
  64 #ifdef GBM_MEDIATEK
  65                 &gbm_driver_mediatek,
  66 #endif
  67 #ifdef GBM_ROCKCHIP
  68                 &gbm_driver_rockchip,
  69 #endif
  70 #ifdef GBM_TEGRA
  71                 &gbm_driver_tegra,
  72 #endif
  73                 &gbm_driver_udl,
  74         };
  75
  76         for(i = 0; i < ARRAY_SIZE(driver_list); i++)
  77                 if (!strcmp(drm_version->name, driver_list[i]->name))
  78                 {
  79                         drmFreeVersion(drm_version);
  80                         return driver_list[i];
  81                 }
  82
  83         drmFreeVersion(drm_version);
  84         return NULL;
  85 }
  86
  87 PUBLIC int
  88 gbm_device_get_fd(struct gbm_device *gbm)
  89 {
  90         return gbm->fd;
  91 }
  92
  93 PUBLIC const char *
  94 gbm_device_get_backend_name(struct gbm_device *gbm)
  95 {
  96         return gbm->driver->name;
  97 }
  98
  99 PUBLIC int
 100 gbm_device_is_format_supported(struct gbm_device *gbm,
 101                                uint32_t format, uint32_t usage)
 102 {
 103         unsigned i;
 104
 105         if (format == GBM_BO_FORMAT_XRGB8888)
 106                 format = GBM_FORMAT_XRGB8888;
 107         if (format == GBM_BO_FORMAT_ARGB8888)
 108                 format = GBM_FORMAT_ARGB8888;
 109
 110         if (usage & GBM_BO_USE_CURSOR &&
 111                 usage & GBM_BO_USE_RENDERING)
 112                 return 0;
 113
 114         for(i = 0 ; i < ARRAY_SIZE(gbm->driver->format_list); i++)
 115         {
 116                 if (!gbm->driver->format_list[i].format)
 117                         break;
 118
 119                 if (gbm->driver->format_list[i].format == format &&
 120                         (gbm->driver->format_list[i].usage & usage) == usage)
 121                         return 1;
 122         }
 123
 124         return 0;
 125 }
 126
 127 PUBLIC struct gbm_device *gbm_create_device(int fd)
 128 {
 129         struct gbm_device *gbm;
 130         int ret;
 131
 132         gbm = (struct gbm_device*) malloc(sizeof(*gbm));
 133         if (!gbm)
 134                 return NULL;
 135
 136         gbm->fd = fd;
 137
 138         gbm->driver = gbm_get_driver(fd);
 139         if (!gbm->driver) {
 140                 free(gbm);
 141                 return NULL;
 142         }
 143
 144         if (gbm->driver->init) {
 145                 ret = gbm->driver->init(gbm);
 146                 if (ret) {
 147                         free(gbm);
 148                         return NULL;
 149                 }
 150         }
 151
 152         return gbm;
 153 }
 154
 155 PUBLIC void gbm_device_destroy(struct gbm_device *gbm)
 156 {
 157         if (gbm->driver->close)
 158                 gbm->driver->close(gbm);
 159         free(gbm);
 160 }
 161
 162 PUBLIC struct gbm_surface *gbm_surface_create(struct gbm_device *gbm,
 163                                               uint32_t width, uint32_t height,
 164                                               uint32_t format, uint32_t flags)
 165 {
 166         struct gbm_surface *surface =
 167                 (struct gbm_surface*) malloc(sizeof(*surface));
 168
 169         if (!surface)
 170                 return NULL;
 171
 172         return surface;
 173 }
 174
 175 PUBLIC void gbm_surface_destroy(struct gbm_surface *surface)
 176 {
 177         free(surface);
 178 }
 179
 180 PUBLIC struct gbm_bo *gbm_surface_lock_front_buffer(struct gbm_surface *surface)
 181 {
 182         return NULL;
 183 }
 184
 185 PUBLIC void gbm_surface_release_buffer(struct gbm_surface *surface,
 186                                        struct gbm_bo *bo)
 187 {
 188 }
 189
 190 static struct gbm_bo *gbm_bo_new(struct gbm_device *gbm,
 191                                  uint32_t width, uint32_t height,
 192                                  uint32_t format, uint32_t stride)
 193 {
 194         struct gbm_bo *bo;
 195
 196         bo = (struct gbm_bo*) malloc(sizeof(*bo));
 197         if (!bo)
 198                 return NULL;
 199
 200         bo->gbm = gbm;
 201         bo->width = width;
 202         bo->height = height;
 203         bo->stride = stride;
 204         bo->format = format;
 205         bo->handle.u32 = 0;
 206         bo->destroy_user_data = NULL;
 207         bo->user_data = NULL;
 208
 209         return bo;
 210 }
 211
 212 PUBLIC struct gbm_bo *gbm_bo_create(struct gbm_device *gbm, uint32_t width,
 213                                     uint32_t height, uint32_t format,
 214                                     uint32_t flags)
 215 {
 216         struct gbm_bo *bo;
 217         int ret;
 218
 219         bo = gbm_bo_new(gbm, width, height, format,
 220                         width * gbm_bytes_from_format(format));
 221         if (!bo)
 222                 return NULL;
 223
 224         ret = gbm->driver->bo_create(bo, width, height, format, flags);
 225         if (ret) {
 226                 free(bo);
 227                 return NULL;
 228         }
 229
 230         return bo;
 231 }
 232
 233 PUBLIC void gbm_bo_destroy(struct gbm_bo *bo)
 234 {
 235         if (bo->destroy_user_data) {
 236                 bo->destroy_user_data(bo, bo->user_data);
 237                 bo->destroy_user_data = NULL;
 238                 bo->user_data = NULL;
 239         }
 240
 241         bo->gbm->driver->bo_destroy(bo);
 242         free(bo);
 243 }
 244
 245 PUBLIC struct gbm_bo *
 246 gbm_bo_import(struct gbm_device *gbm, uint32_t type,
 247               void *buffer, uint32_t usage)
 248 {
 249         struct gbm_import_fd_data *fd_data = buffer;
 250         struct gbm_bo *bo;
 251         struct drm_prime_handle prime_handle;
 252         int ret;
 253
 254         if (type != GBM_BO_IMPORT_FD)
 255                 return NULL;
 256
 257         if (!gbm_device_is_format_supported(gbm, fd_data->format, usage))
 258                 return NULL;
 259
 260         bo = gbm_bo_new(gbm, fd_data->width, fd_data->height, fd_data->format,
 261                         fd_data->stride);
 262         if (!bo)
 263                 return NULL;
 264
 265         prime_handle.fd = fd_data->fd;
 266
 267         ret = drmIoctl(bo->gbm->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
 268         if (ret) {
 269                 fprintf(stderr, "minigbm: DRM_IOCTL_PRIME_FD_TO_HANDLE failed "
 270                                 "(fd=%u)\n", prime_handle.fd);
 271                 free(bo);
 272                 return NULL;
 273         }
 274
 275         bo->handle.u32 = prime_handle.handle;
 276
 277         return bo;
 278 }
 279
 280 PUBLIC uint32_t
 281 gbm_bo_get_width(struct gbm_bo *bo)
 282 {
 283         return bo->width;
 284 }
 285
 286 PUBLIC uint32_t
 287 gbm_bo_get_height(struct gbm_bo *bo)
 288 {
 289         return bo->height;
 290 }
 291
 292 PUBLIC uint32_t
 293 gbm_bo_get_stride(struct gbm_bo *bo)
 294 {
 295         return bo->stride;
 296 }
 297
 298 PUBLIC uint32_t
 299 gbm_bo_get_stride_or_tiling(struct gbm_bo *bo)
 300 {
 301         return bo->tiling ? bo->tiling : bo->stride;
 302 }
 303
 304 PUBLIC uint32_t
 305 gbm_bo_get_format(struct gbm_bo *bo)
 306 {
 307         return bo->format;
 308 }
 309
 310 PUBLIC struct gbm_device *
 311 gbm_bo_get_device(struct gbm_bo *bo)
 312 {
 313         return bo->gbm;
 314 }
 315
 316 PUBLIC union gbm_bo_handle
 317 gbm_bo_get_handle(struct gbm_bo *bo)
 318 {
 319         return bo->handle;
 320 }
 321
 322 PUBLIC int
 323 gbm_bo_get_fd(struct gbm_bo *bo)
 324 {
 325         int fd;
 326
 327         if (drmPrimeHandleToFD(gbm_device_get_fd(bo->gbm),
 328                                 gbm_bo_get_handle(bo).u32,
 329                                 DRM_CLOEXEC,
 330                                 &fd))
 331                 return -1;
 332         else
 333                 return fd;
 334 }
 335
 336 PUBLIC void
 337 gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
 338                      void (*destroy_user_data)(struct gbm_bo *, void *))
 339 {
 340         bo->user_data = data;
 341         bo->destroy_user_data = destroy_user_data;
 342 }
 343
 344 PUBLIC void *
 345 gbm_bo_get_user_data(struct gbm_bo *bo)
 346 {
 347         return bo->user_data;
 348 }