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