| 1 | /** @file
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| 2 | *
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| 3 | * VBox Host Guest Shared Memory Interface (HGSMI).
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| 4 | * Host/Guest shared part.
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| 5 | * Channel identifiers.
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| 6 | */
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| 7 |
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| 8 | /*
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| 9 | * Copyright (C) 2006-2010 Oracle Corporation
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| 10 | *
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| 11 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 12 | * available from http://www.virtualbox.org. This file is free software;
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| 13 | * you can redistribute it and/or modify it under the terms of the GNU
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| 14 | * General Public License (GPL) as published by the Free Software
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| 15 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 16 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 17 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 18 | *
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| 19 | * The contents of this file may alternatively be used under the terms
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| 20 | * of the Common Development and Distribution License Version 1.0
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| 21 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 22 | * VirtualBox OSE distribution, in which case the provisions of the
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| 23 | * CDDL are applicable instead of those of the GPL.
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| 24 | *
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| 25 | * You may elect to license modified versions of this file under the
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| 26 | * terms and conditions of either the GPL or the CDDL or both.
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| 27 | */
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| 28 |
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| 29 |
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| 30 | #ifndef __HGSMIChannels_h__
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| 31 | #define __HGSMIChannels_h__
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| 32 |
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| 33 |
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| 34 | /* Each channel has an 8 bit identifier. There are a number of predefined
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| 35 | * (hardcoded) channels.
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| 36 | *
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| 37 | * HGSMI_CH_HGSMI channel can be used to map a string channel identifier
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| 38 | * to a free 16 bit numerical value. values are allocated in range
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| 39 | * [HGSMI_CH_STRING_FIRST;HGSMI_CH_STRING_LAST].
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| 40 | *
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| 41 | */
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| 42 |
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| 43 |
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| 44 | /* Predefined channel identifiers. Used internally by VBOX to simplify the channel setup. */
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| 45 | #define HGSMI_CH_RESERVED (0x00) /* A reserved channel value. */
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| 46 |
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| 47 | #define HGSMI_CH_HGSMI (0x01) /* HGCMI: setup and configuration channel. */
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| 48 |
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| 49 | #define HGSMI_CH_VBVA (0x02) /* Graphics: VBVA. */
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| 50 | #define HGSMI_CH_SEAMLESS (0x03) /* Graphics: Seamless with a single guest region. */
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| 51 | #define HGSMI_CH_SEAMLESS2 (0x04) /* Graphics: Seamless with separate host windows. */
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| 52 | #define HGSMI_CH_OPENGL (0x05) /* Graphics: OpenGL HW acceleration. */
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| 53 |
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| 54 |
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| 55 | /* Dynamically allocated channel identifiers. */
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| 56 | #define HGSMI_CH_STRING_FIRST (0x20) /* The first channel index to be used for string mappings (inclusive). */
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| 57 | #define HGSMI_CH_STRING_LAST (0xff) /* The last channel index for string mappings (inclusive). */
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| 58 |
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| 59 |
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| 60 | /* Check whether the channel identifier is allocated for a dynamic channel. */
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| 61 | #define HGSMI_IS_DYNAMIC_CHANNEL(_channel) (((uint8_t)(_channel) & 0xE0) != 0)
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| 62 |
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| 63 |
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| 64 | #endif /* !__HGSMIChannels_h__*/
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