1/*	$NetBSD: vmwgfx_prime.c,v 1.3 2021/12/18 23:45:45 riastradh Exp $	*/
2
3// SPDX-License-Identifier: GPL-2.0 OR MIT
4/**************************************************************************
5 *
6 * Copyright 2013 VMware, Inc., Palo Alto, CA., USA
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
18 * of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
24 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
25 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
26 * USE OR OTHER DEALINGS IN THE SOFTWARE.
27 *
28 **************************************************************************/
29/*
30 * Authors:
31 *     Thomas Hellstrom <thellstrom@vmware.com>
32 *
33 */
34
35#include <sys/cdefs.h>
36__KERNEL_RCSID(0, "$NetBSD: vmwgfx_prime.c,v 1.3 2021/12/18 23:45:45 riastradh Exp $");
37
38#include "vmwgfx_drv.h"
39#include "ttm_object.h"
40#include <linux/dma-buf.h>
41
42/*
43 * DMA-BUF attach- and mapping methods. No need to implement
44 * these until we have other virtual devices use them.
45 */
46
47static int vmw_prime_map_attach(struct dma_buf *dma_buf,
48				struct dma_buf_attachment *attach)
49{
50	return -ENOSYS;
51}
52
53static void vmw_prime_map_detach(struct dma_buf *dma_buf,
54				 struct dma_buf_attachment *attach)
55{
56}
57
58static struct sg_table *vmw_prime_map_dma_buf(struct dma_buf_attachment *attach,
59					      enum dma_data_direction dir)
60{
61	return ERR_PTR(-ENOSYS);
62}
63
64static void vmw_prime_unmap_dma_buf(struct dma_buf_attachment *attach,
65				    struct sg_table *sgb,
66				    enum dma_data_direction dir)
67{
68}
69
70const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
71	.attach = vmw_prime_map_attach,
72	.detach = vmw_prime_map_detach,
73	.map_dma_buf = vmw_prime_map_dma_buf,
74	.unmap_dma_buf = vmw_prime_unmap_dma_buf,
75	.release = NULL,
76};
77
78int vmw_prime_fd_to_handle(struct drm_device *dev,
79			   struct drm_file *file_priv,
80			   int fd, u32 *handle)
81{
82	struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
83
84	return ttm_prime_fd_to_handle(tfile, fd, handle);
85}
86
87int vmw_prime_handle_to_fd(struct drm_device *dev,
88			   struct drm_file *file_priv,
89			   uint32_t handle, uint32_t flags,
90			   int *prime_fd)
91{
92	struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
93
94	return ttm_prime_handle_to_fd(tfile, handle, flags, prime_fd);
95}
96