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1// SPDX-License-Identifier: GPL-2.0 OR MIT2/**************************************************************************3 *4 * Copyright (c) 2013-2024 Broadcom. All Rights Reserved. The term5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.6 *7 * Permission is hereby granted, free of charge, to any person obtaining a8 * copy of this software and associated documentation files (the9 * "Software"), to deal in the Software without restriction, including10 * without limitation the rights to use, copy, modify, merge, publish,11 * distribute, sub license, and/or sell copies of the Software, and to12 * permit persons to whom the Software is furnished to do so, subject to13 * the following conditions:14 *15 * The above copyright notice and this permission notice (including the16 * next paragraph) shall be included in all copies or substantial portions17 * of the Software.18 *19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE25 * USE OR OTHER DEALINGS IN THE SOFTWARE.26 *27 **************************************************************************/28/*29 * Authors:30 * Thomas Hellstrom <thellstrom@vmware.com>31 *32 */33 34#include "vmwgfx_drv.h"35#include "vmwgfx_bo.h"36#include "ttm_object.h"37#include <linux/dma-buf.h>38 39/*40 * DMA-BUF attach- and mapping methods. No need to implement41 * these until we have other virtual devices use them.42 */43 44static int vmw_prime_map_attach(struct dma_buf *dma_buf,45 struct dma_buf_attachment *attach)46{47 return -ENOSYS;48}49 50static void vmw_prime_map_detach(struct dma_buf *dma_buf,51 struct dma_buf_attachment *attach)52{53}54 55static struct sg_table *vmw_prime_map_dma_buf(struct dma_buf_attachment *attach,56 enum dma_data_direction dir)57{58 return ERR_PTR(-ENOSYS);59}60 61static void vmw_prime_unmap_dma_buf(struct dma_buf_attachment *attach,62 struct sg_table *sgb,63 enum dma_data_direction dir)64{65}66 67const struct dma_buf_ops vmw_prime_dmabuf_ops = {68 .attach = vmw_prime_map_attach,69 .detach = vmw_prime_map_detach,70 .map_dma_buf = vmw_prime_map_dma_buf,71 .unmap_dma_buf = vmw_prime_unmap_dma_buf,72 .release = NULL,73};74 75int vmw_prime_fd_to_handle(struct drm_device *dev,76 struct drm_file *file_priv,77 int fd, u32 *handle)78{79 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;80 int ret = ttm_prime_fd_to_handle(tfile, fd, handle);81 82 if (ret)83 ret = drm_gem_prime_fd_to_handle(dev, file_priv, fd, handle);84 85 return ret;86}87 88int vmw_prime_handle_to_fd(struct drm_device *dev,89 struct drm_file *file_priv,90 uint32_t handle, uint32_t flags,91 int *prime_fd)92{93 struct vmw_private *vmw = vmw_priv(dev);94 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;95 struct vmw_bo *vbo;96 int ret;97 int surf_handle;98 99 if (handle > VMWGFX_NUM_MOB) {100 ret = ttm_prime_handle_to_fd(tfile, handle, flags, prime_fd);101 } else {102 ret = vmw_user_bo_lookup(file_priv, handle, &vbo);103 if (ret)104 return ret;105 if (vbo && vbo->is_dumb) {106 ret = drm_gem_prime_handle_to_fd(dev, file_priv, handle,107 flags, prime_fd);108 } else {109 surf_handle = vmw_lookup_surface_handle_for_buffer(vmw,110 vbo,111 handle);112 if (surf_handle > 0)113 ret = ttm_prime_handle_to_fd(tfile, surf_handle,114 flags, prime_fd);115 else116 ret = drm_gem_prime_handle_to_fd(dev, file_priv,117 handle, flags,118 prime_fd);119 }120 vmw_user_bo_unref(&vbo);121 }122 123 return ret;124}125