linux/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c

// 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,
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 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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/*
 * Authors:
 *     Thomas Hellstrom <[email protected]>
 *
 */

#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)
{ … }

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)
{ … }

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 = …;

int vmw_prime_fd_to_handle(struct drm_device *dev,
			   struct drm_file *file_priv,
			   int fd, u32 *handle)
{ … }

int vmw_prime_handle_to_fd(struct drm_device *dev,
			   struct drm_file *file_priv,
			   uint32_t handle, uint32_t flags,
			   int *prime_fd)
{ … }