diff options
Diffstat (limited to 'drivers/staging/hv/channel.h')
-rw-r--r-- | drivers/staging/hv/channel.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/staging/hv/channel.h b/drivers/staging/hv/channel.h new file mode 100644 index 000000000000..acb2c556369b --- /dev/null +++ b/drivers/staging/hv/channel.h @@ -0,0 +1,112 @@ +/* + * + * 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_ */ |