drivers/staging/vboxvideo/vboxvideo_guest.h

   1 /*
   2  * Copyright (C) 2006-2017 Oracle Corporation
   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 shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #ifndef __VBOXVIDEO_GUEST_H__
  24 #define __VBOXVIDEO_GUEST_H__
  25
  26 #include <linux/genalloc.h>
  27 #include "vboxvideo.h"
  28
  29 /**
  30  * Structure grouping the context needed for sending graphics acceleration
  31  * information to the host via VBVA.  Each screen has its own VBVA buffer.
  32  */
  33 struct vbva_buf_ctx {
  34         /** Offset of the buffer in the VRAM section for the screen */
  35         u32 buffer_offset;
  36         /** Length of the buffer in bytes */
  37         u32 buffer_length;
  38         /** Set if we wrote to the buffer faster than the host could read it */
  39         bool buffer_overflow;
  40         /** VBVA record that we are currently preparing for the host, or NULL */
  41         struct vbva_record *record;
  42         /**
  43          * Pointer to the VBVA buffer mapped into the current address space.
  44          * Will be NULL if VBVA is not enabled.
  45          */
  46         struct vbva_buffer *vbva;
  47 };
  48
  49 /**
  50  * @name Base HGSMI APIs
  51  * @{
  52  */
  53 int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location);
  54 int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps);
  55 int hgsmi_test_query_conf(struct gen_pool *ctx);
  56 int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret);
  57 int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
  58                                u32 hot_x, u32 hot_y, u32 width, u32 height,
  59                                u8 *pixels, u32 len);
  60 int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
  61                           u32 x, u32 y, u32 *x_host, u32 *y_host);
  62 /** @}  */
  63
  64 /**
  65  * @name VBVA APIs
  66  * @{
  67  */
  68 bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  69                  struct vbva_buffer *vbva, s32 screen);
  70 void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  71                   s32 screen);
  72 bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
  73                               struct gen_pool *ctx);
  74 void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx);
  75 bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  76                 const void *p, u32 len);
  77 void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
  78                                u32 buffer_offset, u32 buffer_length);
  79 /** @}  */
  80
  81 /**
  82  * @name Modesetting APIs
  83  * @{
  84  */
  85 void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
  86                                 s32 origin_x, s32 origin_y, u32 start_offset,
  87                                 u32 pitch, u32 width, u32 height,
  88                                 u16 bpp, u16 flags);
  89 int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
  90                                u32 width, u32 height);
  91 int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
  92                          struct vbva_modehint *hints);
  93 /** @}  */
  94
  95 #endif