xref: /src/sys/external/bsd/drm2/dist/drm/vboxvideo/hgsmi_ch_setup.h

/*	$NetBSD: hgsmi_ch_setup.h,v 1.2 2021/12/18 23:45:44 riastradh Exp $	*/

/* SPDX-License-Identifier: MIT */
/* Copyright (C) 2006-2017 Oracle Corporation */

#ifndef __HGSMI_CH_SETUP_H__
#define __HGSMI_CH_SETUP_H__

/*
 * Tell the host the location of hgsmi_host_flags structure, where the host
 * can write information about pending buffers, etc, and which can be quickly
 * polled by the guest without a need to port IO.
 */
#define HGSMI_CC_HOST_FLAGS_LOCATION 0

struct hgsmi_buffer_location {
	u32 buf_location;
	u32 buf_len;
} __packed;

/* HGSMI setup and configuration data structures. */

#define HGSMIHOSTFLAGS_COMMANDS_PENDING    0x01u
#define HGSMIHOSTFLAGS_IRQ                 0x02u
#define HGSMIHOSTFLAGS_VSYNC               0x10u
#define HGSMIHOSTFLAGS_HOTPLUG             0x20u
#define HGSMIHOSTFLAGS_CURSOR_CAPABILITIES 0x40u

struct hgsmi_host_flags {
	u32 host_flags;
	u32 reserved[3];
} __packed;

#endif