// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright ( c ) 2013 - 2024 Broadcom . All Rights Reserved . The term
* “ Broadcom ” refers to Broadcom Inc . and / or its subsidiaries .
*
* 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 , sub license , 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 ( including the
* next paragraph ) 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 NON - INFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS , AUTHORS AND / OR ITS SUPPLIERS 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 .
*
**************************************************************************/
/*
* Authors :
* Thomas Hellstrom < thellstrom @ vmware . com >
*
*/
#include "vmwgfx_drv.h"
#include "vmwgfx_bo.h"
#include "ttm_object.h"
#include <linux/dma-buf.h>
/*
* DMA - BUF attach - and mapping methods . No need to implement
* these until we have other virtual devices use them .
*/
static int vmw_prime_map_attach(struct dma_buf *dma_buf,
struct dma_buf_attachment *attach)
{
return -ENOSYS;
}
static void vmw_prime_map_detach(struct dma_buf *dma_buf,
struct dma_buf_attachment *attach)
{
}
static struct sg_table *vmw_prime_map_dma_buf(struct dma_buf_attachment *attach,
enum dma_data_direction dir)
{
return ERR_PTR(-ENOSYS);
}
static void vmw_prime_unmap_dma_buf(struct dma_buf_attachment *attach,
struct sg_table *sgb,
enum dma_data_direction dir)
{
}
const struct dma_buf_ops vmw_prime_dmabuf_ops = {
.attach = vmw_prime_map_attach,
.detach = vmw_prime_map_detach,
.map_dma_buf = vmw_prime_map_dma_buf,
.unmap_dma_buf = vmw_prime_unmap_dma_buf,
.release = NULL,
};
int vmw_prime_fd_to_handle(struct drm_device *dev,
struct drm_file *file_priv,
int fd, u32 *handle)
{
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
int ret = ttm_prime_fd_to_handle(tfile, fd, handle);
if (ret)
ret = drm_gem_prime_fd_to_handle(dev, file_priv, fd, handle);
return ret;
}
int vmw_prime_handle_to_fd(struct drm_device *dev,
struct drm_file *file_priv,
uint32_t handle, uint32_t flags,
int *prime_fd)
{
struct vmw_private *vmw = vmw_priv(dev);
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_bo *vbo;
int ret;
int surf_handle;
if (handle > VMWGFX_NUM_MOB) {
ret = ttm_prime_handle_to_fd(tfile, handle, flags, prime_fd);
} else {
ret = vmw_user_bo_lookup(file_priv, handle, &vbo);
if (ret)
return ret;
if (vbo && vbo->is_dumb) {
ret = drm_gem_prime_handle_to_fd(dev, file_priv, handle,
flags, prime_fd);
} else {
surf_handle = vmw_lookup_surface_handle_for_buffer(vmw,
vbo,
handle);
if (surf_handle > 0 )
ret = ttm_prime_handle_to_fd(tfile, surf_handle,
flags, prime_fd);
else
ret = drm_gem_prime_handle_to_fd(dev, file_priv,
handle, flags,
prime_fd);
}
vmw_user_bo_unref(&vbo);
}
return ret;
}
Messung V0.5 in Prozent C=89 H=100 G=94
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-09-28)
¤
*© Formatika GbR, Deutschland