LXR linux/drivers/gpu/drm/vboxvideo/vboxvideo

   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 */
  14struct 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
  30int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location);
  31int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps);
  32int hgsmi_test_query_conf(struct gen_pool *ctx);
  33int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret);
  34int 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);
  37int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
  38                          u32 x, u32 y, u32 *x_host, u32 *y_host);
  39
  40bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  41                 struct vbva_buffer *vbva, s32 screen);
  42void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  43                  s32 screen);
  44bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
  45                              struct gen_pool *ctx);
  46void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx);
  47bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
  48                const void *p, u32 len);
  49void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
  50                               u32 buffer_offset, u32 buffer_length);
  51
  52void 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);
  56int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
  57                               u32 width, u32 height);
  58int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
  59                         struct vbva_modehint *hints);
  60
  61#endif
  62