Subversion Repositories Kolibri OS

/*

 * Mesa 3-D graphics library

 *

 * Copyright (C) 2010 Chia-I Wu 

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 */

#include 

#include 

#include 

#include 

#include 

#include "util/u_memory.h"

#include "egllog.h"

#include "native_drm.h"

#include "gbm_gallium_drmint.h"

#ifdef HAVE_LIBUDEV

#include 

#endif

static boolean

drm_display_is_format_supported(struct native_display *ndpy,

                                enum pipe_format fmt, boolean is_color)

{

   return ndpy->screen->is_format_supported(ndpy->screen,

         fmt, PIPE_TEXTURE_2D, 0,

         (is_color) ? PIPE_BIND_RENDER_TARGET :

         PIPE_BIND_DEPTH_STENCIL);

}

static const struct native_config **

drm_display_get_configs(struct native_display *ndpy, int *num_configs)

{

   struct drm_display *drmdpy = drm_display(ndpy);

   const struct native_config **configs;

   /* first time */

   if (!drmdpy->config) {

      struct native_config *nconf;

      enum pipe_format format;

      drmdpy->config = CALLOC(1, sizeof(*drmdpy->config));

      if (!drmdpy->config)

         return NULL;

      nconf = &drmdpy->config->base;

      nconf->buffer_mask =

         (1 << NATIVE_ATTACHMENT_FRONT_LEFT) |

         (1 << NATIVE_ATTACHMENT_BACK_LEFT);

      format = PIPE_FORMAT_B8G8R8A8_UNORM;

      if (!drm_display_is_format_supported(&drmdpy->base, format, TRUE)) {

         format = PIPE_FORMAT_A8R8G8B8_UNORM;

         if (!drm_display_is_format_supported(&drmdpy->base, format, TRUE))

            format = PIPE_FORMAT_NONE;

      }

      if (format == PIPE_FORMAT_NONE) {

         FREE(drmdpy->config);

         drmdpy->config = NULL;

         return NULL;

      }

      nconf->color_format = format;

      /* support KMS */

      if (drmdpy->resources)

         nconf->scanout_bit = TRUE;

   }

   configs = MALLOC(sizeof(*configs));

   if (configs) {

      configs[0] = &drmdpy->config->base;

      if (num_configs)

         *num_configs = 1;

   }

   return configs;

}

static int

drm_display_get_param(struct native_display *ndpy,

                      enum native_param_type param)

{

   int val;

   switch (param) {

   case NATIVE_PARAM_USE_NATIVE_BUFFER:

   case NATIVE_PARAM_PRESERVE_BUFFER:

   case NATIVE_PARAM_MAX_SWAP_INTERVAL:

   default:

      val = 0;

      break;

   }

   return val;

}

static void

drm_display_destroy(struct native_display *ndpy)

{

   struct drm_display *drmdpy = drm_display(ndpy);

   FREE(drmdpy->config);

   drm_display_fini_modeset(&drmdpy->base);

   /* gbm owns screen */

   ndpy->screen = NULL;

   ndpy_uninit(ndpy);

   FREE(drmdpy->device_name);

   if (drmdpy->own_gbm) {

      gbm_device_destroy(&drmdpy->gbmdrm->base.base);

      if (drmdpy->fd >= 0)

         close(drmdpy->fd);

   }

   FREE(drmdpy);

}

static struct native_display_buffer drm_display_buffer = {

   /* use the helpers */

   drm_display_import_native_buffer,

   drm_display_export_native_buffer

};

static char *

drm_get_device_name(int fd)

{

   char *device_name = NULL;

#ifdef HAVE_LIBUDEV

   struct udev *udev;

   struct udev_device *device;

   struct stat buf;

   const char *tmp;

   udev = udev_new();

   if (fstat(fd, &buf) < 0) {

      _eglLog(_EGL_WARNING, "failed to stat fd %d", fd);

      goto outudev;

   }

   device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);

   if (device == NULL) {

      _eglLog(_EGL_WARNING,

              "could not create udev device for fd %d", fd);

      goto outdevice;

   }

   tmp = udev_device_get_devnode(device);

   if (!tmp)

      goto outdevice;

   device_name = strdup(tmp);

outdevice:

   udev_device_unref(device);

outudev:

   udev_unref(udev);

#endif

   return device_name;

}

#ifdef HAVE_WAYLAND_BACKEND

static int

drm_display_authenticate(void *user_data, uint32_t magic)

{

   struct native_display *ndpy = user_data;

   struct drm_display *drmdpy = drm_display(ndpy);

   return drmAuthMagic(drmdpy->fd, magic);

}

static struct wayland_drm_callbacks wl_drm_callbacks = {

   drm_display_authenticate,

   egl_g3d_wl_drm_helper_reference_buffer,

   egl_g3d_wl_drm_helper_unreference_buffer

};

static boolean

drm_display_bind_wayland_display(struct native_display *ndpy,

                                  struct wl_display *wl_dpy)

{

   struct drm_display *drmdpy = drm_display(ndpy);

   if (drmdpy->wl_server_drm)

      return FALSE;

   drmdpy->wl_server_drm = wayland_drm_init(wl_dpy,

         drmdpy->device_name,

         &wl_drm_callbacks, ndpy, 0);

   if (!drmdpy->wl_server_drm)

      return FALSE;

   return TRUE;

}

static boolean

drm_display_unbind_wayland_display(struct native_display *ndpy,

                                    struct wl_display *wl_dpy)

{

   struct drm_display *drmdpy = drm_display(ndpy);

   if (!drmdpy->wl_server_drm)

      return FALSE;

   wayland_drm_uninit(drmdpy->wl_server_drm);

   drmdpy->wl_server_drm = NULL;

   return TRUE;

}

static struct native_display_wayland_bufmgr drm_display_wayland_bufmgr = {

   drm_display_bind_wayland_display,

   drm_display_unbind_wayland_display,

   egl_g3d_wl_drm_common_wl_buffer_get_resource,

   egl_g3d_wl_drm_common_query_buffer

};

#endif /* HAVE_WAYLAND_BACKEND */

static struct native_surface *

drm_create_pixmap_surface(struct native_display *ndpy,

                              EGLNativePixmapType pix,

                              const struct native_config *nconf)

{

   struct gbm_gallium_drm_bo *bo = (void *) pix;

   return drm_display_create_surface_from_resource(ndpy, bo->resource);

}

static boolean

drm_display_init_screen(struct native_display *ndpy)

{

   return TRUE;

}

static struct native_display *

drm_create_display(struct gbm_gallium_drm_device *gbmdrm, int own_gbm,

                   const struct native_event_handler *event_handler)

{

   struct drm_display *drmdpy;

   drmdpy = CALLOC_STRUCT(drm_display);

   if (!drmdpy)

      return NULL;

   drmdpy->gbmdrm = gbmdrm;

   drmdpy->own_gbm = own_gbm;

   drmdpy->fd = gbmdrm->base.base.fd;

   drmdpy->device_name = drm_get_device_name(drmdpy->fd);

   gbmdrm->lookup_egl_image = (struct pipe_resource *(*)(void *, void *))

      event_handler->lookup_egl_image;

   gbmdrm->lookup_egl_image_data = &drmdpy->base;

   drmdpy->event_handler = event_handler;

   drmdpy->base.screen = gbmdrm->screen;

   drmdpy->base.init_screen = drm_display_init_screen;

   drmdpy->base.destroy = drm_display_destroy;

   drmdpy->base.get_param = drm_display_get_param;

   drmdpy->base.get_configs = drm_display_get_configs;

   drmdpy->base.create_pixmap_surface = drm_create_pixmap_surface;

   drmdpy->base.buffer = &drm_display_buffer;

#ifdef HAVE_WAYLAND_BACKEND

   if (drmdpy->device_name)

      drmdpy->base.wayland_bufmgr = &drm_display_wayland_bufmgr;

#endif

   drm_display_init_modeset(&drmdpy->base);

   return &drmdpy->base;

}

static const struct native_event_handler *drm_event_handler;

static struct native_display *

native_create_display(void *dpy, boolean use_sw)

{

   struct gbm_gallium_drm_device *gbm;

   int fd;

   int own_gbm = 0;

   gbm = dpy;

   if (gbm == NULL) {

      const char *device_name="/dev/dri/card0";

#ifdef O_CLOEXEC

      fd = open(device_name, O_RDWR | O_CLOEXEC);

      if (fd == -1 && errno == EINVAL)

#endif

      {

         fd = open(device_name, O_RDWR);

         if (fd != -1)

            fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);

      }

      /* FIXME: Use an internal constructor to create a gbm

       * device with gallium backend directly, without setenv */

      setenv("GBM_BACKEND", "gbm_gallium_drm.so", 1);

      gbm = gbm_gallium_drm_device(gbm_create_device(fd));

      own_gbm = 1;

   }

   if (gbm == NULL)

      return NULL;

   if (strcmp(gbm_device_get_backend_name(&gbm->base.base), "drm") != 0 ||

       gbm->base.type != GBM_DRM_DRIVER_TYPE_GALLIUM) {

      if (own_gbm)

         gbm_device_destroy(&gbm->base.base);

      return NULL;

   }

   return drm_create_display(gbm, own_gbm, drm_event_handler);

}

static const struct native_platform drm_platform = {

   "DRM", /* name */

   native_create_display

};

const struct native_platform *

native_get_drm_platform(const struct native_event_handler *event_handler)

{

   drm_event_handler = event_handler;

   return &drm_platform;

}