drivers/gpu/drm/vboxvideo/hgsmi_channels.h

   1 /* SPDX-License-Identifier: MIT */
   2 /* Copyright (C) 2006-2017 Oracle Corporation */
   3
   4 #ifndef __HGSMI_CHANNELS_H__
   5 #define __HGSMI_CHANNELS_H__
   6
   7 /*
   8  * Each channel has an 8 bit identifier. There are a number of predefined
   9  * (hardcoded) channels.
  10  *
  11  * HGSMI_CH_HGSMI channel can be used to map a string channel identifier
  12  * to a free 16 bit numerical value. values are allocated in range
  13  * [HGSMI_CH_STRING_FIRST;HGSMI_CH_STRING_LAST].
  14  */
  15
  16 /* A reserved channel value */
  17 #define HGSMI_CH_RESERVED                               0x00
  18 /* HGCMI: setup and configuration */
  19 #define HGSMI_CH_HGSMI                                  0x01
  20 /* Graphics: VBVA */
  21 #define HGSMI_CH_VBVA                                   0x02
  22 /* Graphics: Seamless with a single guest region */
  23 #define HGSMI_CH_SEAMLESS                               0x03
  24 /* Graphics: Seamless with separate host windows */
  25 #define HGSMI_CH_SEAMLESS2                              0x04
  26 /* Graphics: OpenGL HW acceleration */
  27 #define HGSMI_CH_OPENGL                                 0x05
  28
  29 /* The first channel index to be used for string mappings (inclusive) */
  30 #define HGSMI_CH_STRING_FIRST                           0x20
  31 /* The last channel index for string mappings (inclusive) */
  32 #define HGSMI_CH_STRING_LAST                            0xff
  33
  34 #endif