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
  35 struct 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  */
  54 struct 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
  63 int intel_vgpu_query_plane(struct intel_vgpu *vgpu, void *args);
  64 int intel_vgpu_get_dmabuf(struct intel_vgpu *vgpu, unsigned int dmabuf_id);
  65 void intel_vgpu_dmabuf_cleanup(struct intel_vgpu *vgpu);
  66
  67 #endif