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/*
* Copyright (C) 2011 Intel Corporation.
* Copyright (C) 2016,2017 Red Hat
* Copyright (C) 2018,2019 DisplayLink (UK) Ltd.
* Copyright (C) 2018 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/native/meta-drm-buffer-import.h"
#include <drm_fourcc.h>
#include <errno.h>
#include <fcntl.h>
#include <xf86drm.h>
#include "backends/native/meta-drm-buffer-gbm.h"
#include "backends/native/meta-kms-utils.h"
#include "backends/native/meta-renderer-native.h"
#define INVALID_FB_ID 0U
struct _MetaDrmBufferImport
{
MetaDrmBuffer parent;
MetaGpuKms *gpu_kms;
MetaDrmBufferGbm *importee;
uint32_t fb_id;
};
G_DEFINE_TYPE (MetaDrmBufferImport, meta_drm_buffer_import,
META_TYPE_DRM_BUFFER)
static struct gbm_bo *
dmabuf_to_gbm_bo (struct gbm_device *importer,
int dmabuf_fd,
uint32_t width,
uint32_t height,
uint32_t stride,
uint32_t format)
{
struct gbm_import_fd_data data = {
.fd = dmabuf_fd,
.width = width,
.height = height,
.stride = stride,
.format = format
};
return gbm_bo_import (importer,
GBM_BO_IMPORT_FD,
&data,
GBM_BO_USE_SCANOUT);
}
static gboolean
import_gbm_buffer (MetaDrmBufferImport *buffer_import,
GError **error)
{
MetaGpuKmsFBArgs fb_args = { 0, };
struct gbm_bo *primary_bo;
struct gbm_device *importer;
struct gbm_bo *imported_bo;
int dmabuf_fd;
gboolean ret;
g_assert (buffer_import->fb_id == INVALID_FB_ID);
importer = meta_gbm_device_from_gpu (buffer_import->gpu_kms);
primary_bo = meta_drm_buffer_gbm_get_bo (buffer_import->importee);
dmabuf_fd = gbm_bo_get_fd (primary_bo);
if (dmabuf_fd == -1)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"getting dmabuf fd failed");
return FALSE;
}
fb_args.strides[0] = gbm_bo_get_stride (primary_bo);
fb_args.width = gbm_bo_get_width (primary_bo);
fb_args.height = gbm_bo_get_height (primary_bo);
fb_args.format = gbm_bo_get_format (primary_bo);
imported_bo = dmabuf_to_gbm_bo (importer,
dmabuf_fd,
fb_args.width,
fb_args.height,
fb_args.strides[0],
fb_args.format);
if (!imported_bo)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"importing dmabuf fd failed");
ret = FALSE;
goto out_close;
}
fb_args.handles[0] = gbm_bo_get_handle (imported_bo).u32;
ret = meta_gpu_kms_add_fb (buffer_import->gpu_kms,
FALSE /* use_modifiers */,
&fb_args,
&buffer_import->fb_id,
error);
gbm_bo_destroy (imported_bo);
out_close:
close (dmabuf_fd);
return ret;
}
MetaDrmBufferImport *
meta_drm_buffer_import_new (MetaGpuKms *gpu_kms,
MetaDrmBufferGbm *buffer_gbm,
GError **error)
{
MetaDrmBufferImport *buffer_import;
buffer_import = g_object_new (META_TYPE_DRM_BUFFER_IMPORT, NULL);
buffer_import->gpu_kms = gpu_kms;
g_set_object (&buffer_import->importee, buffer_gbm);
if (!import_gbm_buffer (buffer_import, error))
{
g_object_unref (buffer_import);
return NULL;
}
return buffer_import;
}
static uint32_t
meta_drm_buffer_import_get_fb_id (MetaDrmBuffer *buffer)
{
return META_DRM_BUFFER_IMPORT (buffer)->fb_id;
}
static void
meta_drm_buffer_import_finalize (GObject *object)
{
MetaDrmBufferImport *buffer_import = META_DRM_BUFFER_IMPORT (object);
if (buffer_import->fb_id != INVALID_FB_ID)
{
int kms_fd;
kms_fd = meta_gpu_kms_get_fd (buffer_import->gpu_kms);
drmModeRmFB (kms_fd, buffer_import->fb_id);
}
g_clear_object (&buffer_import->importee);
G_OBJECT_CLASS (meta_drm_buffer_import_parent_class)->finalize (object);
}
static void
meta_drm_buffer_import_init (MetaDrmBufferImport *buffer_import)
{
}
static void
meta_drm_buffer_import_class_init (MetaDrmBufferImportClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MetaDrmBufferClass *buffer_class = META_DRM_BUFFER_CLASS (klass);
object_class->finalize = meta_drm_buffer_import_finalize;
buffer_class->get_fb_id = meta_drm_buffer_import_get_fb_id;
}
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