drivers/gpu/drm/vboxvideo/vboxvideo_guest.h

   1 /* SPDX-License-Identifier: MIT */
   2 /* Copyright (C) 2006-2016 Oracle Corporation */
   3
   4 #ifndef __VBOXVIDEO_GUEST_H__
   5 #define __VBOXVIDEO_GUEST_H__
   6
   7 #include <linux/genalloc.h>
   8 #include "vboxvideo.h"
   9
  10 /*
  11  * Structure grouping the context needed for sending graphics acceleration
  12  * information to the host via VBVA.  Each screen has its own VBVA buffer.
  13  */
  14 struct vbva_buf_ctx {
  15         /* Offset of the buffer in the VRAM section for the screen */
  16         u32 buffer_offset;
  17         /* Length of the buffer in bytes */
  18         u32 buffer_length;
  19         /* Set if we wrote to the buffer faster than the host could read it */
  20         bool buffer_overflow;
  21         /* VBVA record that we are currently preparing for the host, or NULL */
  22         struct vbva_record *record;
  23         /*
  24          * Pointer to the VBVA buffer mapped into the current address space.
  25          * Will be NULL if VBVA is not enabled.
  26          */
  27         struct vbva_buffer *vbva;
  28 };
  29
  30 int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location);
  31 int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps);
  32 int hgsmi_test_query_conf(struct gen_pool *ctx);
  33 int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret);
  34 int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
  35                                u32 hot_x, u32 hot_y, u32 width, u32 height,
  36                                u8 *pixels, u32 len);
  37 int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
  38                           u32 x, u32 y, u32 *x_host, u32 *y_host);
  39
  40 bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  41                  struct vbva_buffer *vbva, s32 screen);
  42 void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  43                   s32 screen);
  44 bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
  45                               struct gen_pool *ctx);
  46 void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx);
  47 bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  48                 const void *p, u32 len);
  49 void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
  50                                u32 buffer_offset, u32 buffer_length);
  51
  52 void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
  53                                 s32 origin_x, s32 origin_y, u32 start_offset,
  54                                 u32 pitch, u32 width, u32 height,
  55                                 u16 bpp, u16 flags);
  56 int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
  57                                u32 width, u32 height);
  58 int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
  59                          struct vbva_modehint *hints);
  60
  61 #endif