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/*
*
* Copyright (c) 2009, Microsoft Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*
* Authors:
* Haiyang Zhang <haiyangz@microsoft.com>
* Hank Janssen <hjanssen@microsoft.com>
*
*/
#pragma once
// allow nameless unions
//#pragma warning(disable : 4201)
//
// A revision number of vmbus that is used for ensuring both ends on a
// partition are using compatible versions.
//
#define VMBUS_REVISION_NUMBER 13
//
// Make maximum size of pipe payload of 16K
//
#define MAX_PIPE_DATA_PAYLOAD (sizeof(BYTE) * 16384)
//
// Define PipeMode values.
//
#define VMBUS_PIPE_TYPE_BYTE 0x00000000
#define VMBUS_PIPE_TYPE_MESSAGE 0x00000004
//
// The size of the user defined data buffer for non-pipe offers.
//
#define MAX_USER_DEFINED_BYTES 120
//
// The size of the user defined data buffer for pipe offers.
//
#define MAX_PIPE_USER_DEFINED_BYTES 116
//
// At the center of the Channel Management library is
// the Channel Offer. This struct contains the
// fundamental information about an offer.
//
#pragma pack(push,1)
typedef struct
{
GUID InterfaceType;
GUID InterfaceInstance;
UINT64 InterruptLatencyIn100nsUnits;
u32 InterfaceRevision;
u32 ServerContextAreaSize; // in bytes
u16 ChannelFlags;
u16 MmioMegabytes; // in bytes * 1024 * 1024
union
{
//
// Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes.
//
struct
{
UCHAR UserDefined[MAX_USER_DEFINED_BYTES];
} Standard;
//
// Pipes: The following sructure is an integrated pipe protocol, which
// is implemented on top of standard user-defined data. Pipe clients
// have MAX_PIPE_USER_DEFINED_BYTES left for their own use.
//
struct
{
u32 PipeMode;
UCHAR UserDefined[MAX_PIPE_USER_DEFINED_BYTES];
} Pipe;
} u;
u32 Padding;
} VMBUS_CHANNEL_OFFER, *PVMBUS_CHANNEL_OFFER;
#pragma pack(pop)
//
// Verify the MAX_PIPE_USER_DEFINED_BYTES value.
//
//C_ASSERT(MAX_PIPE_USER_DEFINED_BYTES ==
// MAX_USER_DEFINED_BYTES -
// (FIELD_OFFSET(VMBUS_CHANNEL_OFFER, u.Pipe.UserDefined) -
// FIELD_OFFSET(VMBUS_CHANNEL_OFFER, u.Standard.UserDefined)));
//
typedef u32 GPADL_HANDLE;
//
// Server Flags
//
#define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1
#define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2
#define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4
#define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10
#define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100
#define VMBUS_CHANNEL_PARENT_OFFER 0x200
#define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400
//
// TEMPTEMP -- move this next define to devioctl.h some day
//
#ifndef FILE_DEVICE_VMBUS
#define FILE_DEVICE_VMBUS 0x0000003E
#endif
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