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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>
*
*/
#ifndef _CHANNEL_H_
#define _CHANNEL_H_
#include "channel_mgmt.h"
/* The format must be the same as struct vmdata_gpa_direct */
struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER {
u16 Type;
u16 DataOffset8;
u16 Length8;
u16 Flags;
u64 TransactionId;
u32 Reserved;
u32 RangeCount;
struct hv_page_buffer Range[MAX_PAGE_BUFFER_COUNT];
} __attribute__((packed));
/* The format must be the same as struct vmdata_gpa_direct */
struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER {
u16 Type;
u16 DataOffset8;
u16 Length8;
u16 Flags;
u64 TransactionId;
u32 Reserved;
u32 RangeCount; /* Always 1 in this case */
struct hv_multipage_buffer Range;
} __attribute__((packed));
extern int VmbusChannelOpen(struct vmbus_channel *channel,
u32 SendRingBufferSize,
u32 RecvRingBufferSize,
void *UserData,
u32 UserDataLen,
void(*OnChannelCallback)(void *context),
void *Context);
extern void VmbusChannelClose(struct vmbus_channel *channel);
extern int VmbusChannelSendPacket(struct vmbus_channel *channel,
const void *Buffer,
u32 BufferLen,
u64 RequestId,
enum vmbus_packet_type Type,
u32 Flags);
extern int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *channel,
struct hv_page_buffer PageBuffers[],
u32 PageCount,
void *Buffer,
u32 BufferLen,
u64 RequestId);
extern int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *channel,
struct hv_multipage_buffer *mpb,
void *Buffer,
u32 BufferLen,
u64 RequestId);
extern int VmbusChannelEstablishGpadl(struct vmbus_channel *channel,
void *Kbuffer,
u32 Size,
u32 *GpadlHandle);
extern int VmbusChannelTeardownGpadl(struct vmbus_channel *channel,
u32 GpadlHandle);
extern int VmbusChannelRecvPacket(struct vmbus_channel *channel,
void *Buffer,
u32 BufferLen,
u32 *BufferActualLen,
u64 *RequestId);
extern int VmbusChannelRecvPacketRaw(struct vmbus_channel *channel,
void *Buffer,
u32 BufferLen,
u32 *BufferActualLen,
u64 *RequestId);
extern void VmbusChannelOnChannelEvent(struct vmbus_channel *channel);
extern void VmbusChannelGetDebugInfo(struct vmbus_channel *channel,
struct vmbus_channel_debug_info *debug);
extern void VmbusChannelOnTimer(unsigned long data);
#endif /* _CHANNEL_H_ */
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