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