1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /**************************************************************************
4 * Copyright 2013 VMware, Inc., Palo Alto, CA., USA
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
33 #include "vmwgfx_drv.h"
34 #include "ttm_object.h"
35 #include <linux/dma-buf.h>
38 * DMA-BUF attach- and mapping methods. No need to implement
39 * these until we have other virtual devices use them.
42 static int vmw_prime_map_attach(struct dma_buf *dma_buf,
43 struct dma_buf_attachment *attach)
48 static void vmw_prime_map_detach(struct dma_buf *dma_buf,
49 struct dma_buf_attachment *attach)
53 static struct sg_table *vmw_prime_map_dma_buf(struct dma_buf_attachment *attach,
54 enum dma_data_direction dir)
56 return ERR_PTR(-ENOSYS);
59 static void vmw_prime_unmap_dma_buf(struct dma_buf_attachment *attach,
61 enum dma_data_direction dir)
65 static void *vmw_prime_dmabuf_vmap(struct dma_buf *dma_buf)
70 static void vmw_prime_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
74 static void *vmw_prime_dmabuf_kmap(struct dma_buf *dma_buf,
75 unsigned long page_num)
80 static void vmw_prime_dmabuf_kunmap(struct dma_buf *dma_buf,
81 unsigned long page_num, void *addr)
86 static int vmw_prime_dmabuf_mmap(struct dma_buf *dma_buf,
87 struct vm_area_struct *vma)
89 WARN_ONCE(true, "Attempted use of dmabuf mmap. Bad.\n");
93 const struct dma_buf_ops vmw_prime_dmabuf_ops = {
94 .attach = vmw_prime_map_attach,
95 .detach = vmw_prime_map_detach,
96 .map_dma_buf = vmw_prime_map_dma_buf,
97 .unmap_dma_buf = vmw_prime_unmap_dma_buf,
99 .map = vmw_prime_dmabuf_kmap,
100 .unmap = vmw_prime_dmabuf_kunmap,
101 .mmap = vmw_prime_dmabuf_mmap,
102 .vmap = vmw_prime_dmabuf_vmap,
103 .vunmap = vmw_prime_dmabuf_vunmap,
106 int vmw_prime_fd_to_handle(struct drm_device *dev,
107 struct drm_file *file_priv,
110 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
112 return ttm_prime_fd_to_handle(tfile, fd, handle);
115 int vmw_prime_handle_to_fd(struct drm_device *dev,
116 struct drm_file *file_priv,
117 uint32_t handle, uint32_t flags,
120 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
122 return ttm_prime_handle_to_fd(tfile, handle, flags, prime_fd);