workbench/libs/mesa/src/gallium/include/state_tracker/drm_driver.h

   1
   2 #ifndef _DRM_DRIVER_H_
   3 #define _DRM_DRIVER_H_
   4
   5 #include "pipe/p_compiler.h"
   6
   7 struct pipe_screen;
   8 struct pipe_winsys;
   9 struct pipe_context;
  10 struct pipe_resource;
  11
  12 #define DRM_API_HANDLE_TYPE_SHARED 0
  13 #define DRM_API_HANDLE_TYPE_KMS    1
  14
  15 /**
  16  * For use with pipe_screen::{texture_from_handle|texture_get_handle}.
  17  */
  18 struct winsys_handle
  19 {
  20    /**
  21     * Unused for texture_from_handle, always
  22     * DRM_API_HANDLE_TYPE_SHARED.  Input to texture_get_handle,
  23     * use TEXTURE_USAGE to select handle for kms or ipc.
  24     */
  25    unsigned type;
  26    /**
  27     * Input to texture_from_handle.
  28     * Output for texture_get_handle.
  29     */
  30    unsigned handle;
  31    /**
  32     * Input to texture_from_handle.
  33     * Output for texture_get_handle.
  34     */
  35    unsigned stride;
  36 };
  37
  38 struct drm_driver_descriptor
  39 {
  40    /**
  41     * Identifying sufix/prefix of the binary, used by egl.
  42     */
  43    const char *name;
  44
  45    /**
  46     * Kernel driver name, as accepted by drmOpenByName.
  47     */
  48    const char *driver_name;
  49
  50    /**
  51     * Create a pipe srcreen.
  52     *
  53     * This function does any wrapping of the screen.
  54     * For example wrapping trace or rbug debugging drivers around it.
  55     */
  56    struct pipe_screen* (*create_screen)(int drm_fd);
  57 };
  58
  59 extern struct drm_driver_descriptor driver_descriptor;
  60
  61 /**
  62  * Instantiate a drm_driver_descriptor struct.
  63  */
  64 #define DRM_DRIVER_DESCRIPTOR(name_str, driver_name_str, func) \
  65 struct drm_driver_descriptor driver_descriptor = {             \
  66    .name = name_str,                                           \
  67    .driver_name = driver_name_str,                             \
  68    .create_screen = func,                                      \
  69 };
  70
  71 #endif