LXR linux/drivers/gpu/drm/i915/gvt/dmabuf.h

   1/*
   2 * Copyright(c) 2017 Intel Corporation. All rights reserved.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice (including the next
  12 * paragraph) shall be included in all copies or substantial portions of the
  13 * Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21 * SOFTWARE.
  22 *
  23 * Authors:
  24 *    Zhiyuan Lv <zhiyuan.lv@intel.com>
  25 *
  26 * Contributors:
  27 *    Xiaoguang Chen
  28 *    Tina Zhang <tina.zhang@intel.com>
  29 */
  30
  31#ifndef _GVT_DMABUF_H_
  32#define _GVT_DMABUF_H_
  33#include <linux/vfio.h>
  34
  35struct intel_vgpu_fb_info {
  36        __u64 start;
  37        __u64 start_gpa;
  38        __u64 drm_format_mod;
  39        __u32 drm_format;       /* drm format of plane */
  40        __u32 width;    /* width of plane */
  41        __u32 height;   /* height of plane */
  42        __u32 stride;   /* stride of plane */
  43        __u32 size;     /* size of plane in bytes, align on page */
  44        __u32 x_pos;    /* horizontal position of cursor plane */
  45        __u32 y_pos;    /* vertical position of cursor plane */
  46        __u32 x_hot;    /* horizontal position of cursor hotspot */
  47        __u32 y_hot;    /* vertical position of cursor hotspot */
  48        struct intel_vgpu_dmabuf_obj *obj;
  49};
  50
  51/**
  52 * struct intel_vgpu_dmabuf_obj- Intel vGPU device buffer object
  53 */
  54struct intel_vgpu_dmabuf_obj {
  55        struct intel_vgpu *vgpu;
  56        struct intel_vgpu_fb_info *info;
  57        __u32 dmabuf_id;
  58        struct kref kref;
  59        bool initref;
  60        struct list_head list;
  61};
  62
  63int intel_vgpu_query_plane(struct intel_vgpu *vgpu, void *args);
  64int intel_vgpu_get_dmabuf(struct intel_vgpu *vgpu, unsigned int dmabuf_id);
  65void intel_vgpu_dmabuf_cleanup(struct intel_vgpu *vgpu);
  66
  67#endif
  68