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 */
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);
37
38bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
39		 struct vbva_buffer *vbva, s32 screen);
40void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
41		  s32 screen);
42bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
43			      struct gen_pool *ctx);
44void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx);
45bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
46		const void *p, u32 len);
47void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
48			       u32 buffer_offset, u32 buffer_length);
49
50void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
51				s32 origin_x, s32 origin_y, u32 start_offset,
52				u32 pitch, u32 width, u32 height,
53				u16 bpp, u16 flags);
54int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
55			       u32 width, u32 height);
56int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
57			 struct vbva_modehint *hints);
58
59#endif