| 1 | /** @file
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| 2 | *
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| 3 | * VBoxGuest -- VirtualBox Win 2000/XP guest video driver:
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| 4 | * Display driver entry points
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2006 InnoTek Systemberatung GmbH
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| 9 | *
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| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | * available from http://www.virtualbox.org. This file is free software;
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| 12 | * you can redistribute it and/or modify it under the terms of the GNU
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| 13 | * General Public License as published by the Free Software Foundation,
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| 14 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 15 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 16 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | *
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| 18 | * If you received this file as part of a commercial VirtualBox
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| 19 | * distribution, then only the terms of your commercial VirtualBox
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| 20 | * license agreement apply instead of the previous paragraph.
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| 21 | */
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| 22 |
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| 23 | #ifndef __VBOXIOCTL__H
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| 24 | #define __VBOXIOCTL__H
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| 25 |
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| 26 | #include <VBox/VBoxGuest.h>
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| 27 |
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| 28 | #ifndef __WINs__
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| 29 | /* These appear to be standard Windows ddk macros */
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| 30 | #define FILE_DEVICE_VIDEO 0x23
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| 31 | #define FILE_ANY_ACCESS 0
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| 32 | #endif /* not __WIN__ */
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| 33 |
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| 34 | /** Called by the display driver when it is ready to
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| 35 | * switch to VBVA operation mode.
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| 36 | * Successful return means that VBVA can be used and
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| 37 | * output buffer contains VBVAENABLERESULT data.
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| 38 | * An error means that VBVA can not be used
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| 39 | * (disabled or not supported by the host).
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| 40 | */
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| 41 | #define IOCTL_VIDEO_VBVA_ENABLE \
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| 42 | CTL_CODE(FILE_DEVICE_VIDEO, 0x400, METHOD_BUFFERED, FILE_ANY_ACCESS, \
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| 43 | 0)
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| 44 |
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| 45 | #define IOCTL_VIDEO_VBVA_PLACE \
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| 46 | CTL_CODE(FILE_DEVICE_VIDEO, 0x401, METHOD_BUFFERED, FILE_ANY_ACCESS, \
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| 47 | sizeof(VBVACMDINFO))
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| 48 |
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| 49 | #pragma pack(1)
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| 50 | /**
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| 51 | * Data returned by IOCTL_VIDEO_VBVA_ENABLE.
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| 52 | *
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| 53 | */
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| 54 | typedef struct _VBVAENABLERESULT
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| 55 | {
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| 56 | /** Pointer to VBVAMemory part of VMMDev memory region. */
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| 57 | VBVAMEMORY *pVbvaMemory;
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| 58 |
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| 59 | /** Called to force the host to process VBVA memory,
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| 60 | * when there is no more free space in VBVA memory.
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| 61 | * Normally this never happens.
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| 62 | *
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| 63 | * The other purpose is to perform a synchronous command.
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| 64 | * But the goal is to have no such commands at all.
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| 65 | */
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| 66 | DECLCALLBACKMEMBER(void, pfnFlush) (void *pvFlush);
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| 67 |
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| 68 | /** Pointer required by the pfnFlush callback. */
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| 69 | void *pvFlush;
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| 70 |
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| 71 | } VBVAENABLERESULT;
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| 72 |
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| 73 |
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| 74 | /**
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| 75 | * Structure used to pass information about a VBVA command to the
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| 76 | * Linux kernel module. We need this because Linux IOCTLs are not
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| 77 | * as well suited as Windows ones to variable data sizes.
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| 78 | */
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| 79 | typedef struct _VBVACMDINFO
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| 80 | {
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| 81 | /** Size of the command structure. */
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| 82 | uint32_t u32Size;
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| 83 | /** Pointer to the structure data (in userspace) */
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| 84 | void *pData;
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| 85 | } VBVACMDINFO;
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| 86 | #pragma pack()
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| 87 |
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| 88 | #endif /* __VBOXIOCTL__H */
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