1/*	$NetBSD: vboxvideo_guest.h,v 1.2 2021/12/18 23:45:44 riastradh Exp $	*/
2
3/* SPDX-License-Identifier: MIT */
4/* Copyright (C) 2006-2016 Oracle Corporation */
5
6#ifndef __VBOXVIDEO_GUEST_H__
7#define __VBOXVIDEO_GUEST_H__
8
9#include <linux/genalloc.h>
10#include "vboxvideo.h"
11
12/*
13 * Structure grouping the context needed for sending graphics acceleration
14 * information to the host via VBVA.  Each screen has its own VBVA buffer.
15 */
16struct vbva_buf_ctx {
17	/* Offset of the buffer in the VRAM section for the screen */
18	u32 buffer_offset;
19	/* Length of the buffer in bytes */
20	u32 buffer_length;
21	/* Set if we wrote to the buffer faster than the host could read it */
22	bool buffer_overflow;
23	/* VBVA record that we are currently preparing for the host, or NULL */
24	struct vbva_record *record;
25	/*
26	 * Pointer to the VBVA buffer mapped into the current address space.
27	 * Will be NULL if VBVA is not enabled.
28	 */
29	struct vbva_buffer *vbva;
30};
31
32int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location);
33int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps);
34int hgsmi_test_query_conf(struct gen_pool *ctx);
35int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret);
36int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
37			       u32 hot_x, u32 hot_y, u32 width, u32 height,
38			       u8 *pixels, u32 len);
39int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
40			  u32 x, u32 y, u32 *x_host, u32 *y_host);
41
42bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
43		 struct vbva_buffer *vbva, s32 screen);
44void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
45		  s32 screen);
46bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
47			      struct gen_pool *ctx);
48void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx);
49bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
50		const void *p, u32 len);
51void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
52			       u32 buffer_offset, u32 buffer_length);
53
54void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
55				s32 origin_x, s32 origin_y, u32 start_offset,
56				u32 pitch, u32 width, u32 height,
57				u16 bpp, u16 flags);
58int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
59			       u32 width, u32 height);
60int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
61			 struct vbva_modehint *hints);
62
63#endif
64