LXR linux/drivers/gpu/drm/vmwgfx/vmwgfx_ttm

   1// SPDX-License-Identifier: GPL-2.0 OR MIT
   2/**************************************************************************
   3 *
   4 * Copyright 2009-2011 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#include "vmwgfx_drv.h"
  29
  30int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
  31{
  32        struct drm_file *file_priv = filp->private_data;
  33        struct vmw_private *dev_priv = vmw_priv(file_priv->minor->dev);
  34
  35        return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
  36}
  37
  38/* struct vmw_validation_mem callback */
  39static int vmw_vmt_reserve(struct vmw_validation_mem *m, size_t size)
  40{
  41        static struct ttm_operation_ctx ctx = {.interruptible = false,
  42                                               .no_wait_gpu = false};
  43        struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm);
  44
  45        return ttm_mem_global_alloc(vmw_mem_glob(dev_priv), size, &ctx);
  46}
  47
  48/* struct vmw_validation_mem callback */
  49static void vmw_vmt_unreserve(struct vmw_validation_mem *m, size_t size)
  50{
  51        struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm);
  52
  53        return ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
  54}
  55
  56/**
  57 * vmw_validation_mem_init_ttm - Interface the validation memory tracker
  58 * to ttm.
  59 * @dev_priv: Pointer to struct vmw_private. The reason we choose a vmw private
  60 * rather than a struct vmw_validation_mem is to make sure assumption in the
  61 * callbacks that struct vmw_private derives from struct vmw_validation_mem
  62 * holds true.
  63 * @gran: The recommended allocation granularity
  64 */
  65void vmw_validation_mem_init_ttm(struct vmw_private *dev_priv, size_t gran)
  66{
  67        struct vmw_validation_mem *vvm = &dev_priv->vvm;
  68
  69        vvm->reserve_mem = vmw_vmt_reserve;
  70        vvm->unreserve_mem = vmw_vmt_unreserve;
  71        vvm->gran = gran;
  72}
  73