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