| Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) 2009, Microsoft Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| 16 | * Place - Suite 330, Boston, MA 02111-1307 USA. |
| 17 | * |
| 18 | * Authors: |
| 19 | * Haiyang Zhang <haiyangz@microsoft.com> |
| 20 | * Hank Janssen <hjanssen@microsoft.com> |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | |
| 25 | #ifndef _CHANNEL_H_ |
| 26 | #define _CHANNEL_H_ |
| 27 | |
| 28 | #include "osd.h" |
| 29 | #include "ChannelMgmt.h" |
| 30 | |
| 31 | #pragma pack(push,1) |
| 32 | |
| 33 | |
| 34 | // The format must be the same as VMDATA_GPA_DIRECT |
| 35 | typedef struct _VMBUS_CHANNEL_PACKET_PAGE_BUFFER { |
| 36 | UINT16 Type; |
| 37 | UINT16 DataOffset8; |
| 38 | UINT16 Length8; |
| 39 | UINT16 Flags; |
| 40 | UINT64 TransactionId; |
| 41 | UINT32 Reserved; |
| 42 | UINT32 RangeCount; |
| 43 | PAGE_BUFFER Range[MAX_PAGE_BUFFER_COUNT]; |
| 44 | } VMBUS_CHANNEL_PACKET_PAGE_BUFFER; |
| 45 | |
| 46 | |
| 47 | // The format must be the same as VMDATA_GPA_DIRECT |
| 48 | typedef struct _VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER { |
| 49 | UINT16 Type; |
| 50 | UINT16 DataOffset8; |
| 51 | UINT16 Length8; |
| 52 | UINT16 Flags; |
| 53 | UINT64 TransactionId; |
| 54 | UINT32 Reserved; |
| 55 | UINT32 RangeCount; // Always 1 in this case |
| 56 | MULTIPAGE_BUFFER Range; |
| 57 | } VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER; |
| 58 | |
| 59 | #pragma pack(pop) |
| 60 | |
| 61 | // |
| 62 | // Routines |
| 63 | // |
| 64 | |
| 65 | INTERNAL int |
| 66 | VmbusChannelOpen( |
| 67 | VMBUS_CHANNEL *Channel, |
| 68 | UINT32 SendRingBufferSize, |
| 69 | UINT32 RecvRingBufferSize, |
| 70 | PVOID UserData, |
| 71 | UINT32 UserDataLen, |
| 72 | PFN_CHANNEL_CALLBACK pfnOnChannelCallback, |
| 73 | PVOID Context |
| 74 | ); |
| 75 | |
| 76 | INTERNAL void |
| 77 | VmbusChannelClose( |
| 78 | VMBUS_CHANNEL *Channel |
| 79 | ); |
| 80 | |
| 81 | INTERNAL int |
| 82 | VmbusChannelSendPacket( |
| 83 | VMBUS_CHANNEL *Channel, |
| 84 | const PVOID Buffer, |
| 85 | UINT32 BufferLen, |
| 86 | UINT64 RequestId, |
| 87 | VMBUS_PACKET_TYPE Type, |
| 88 | UINT32 Flags |
| 89 | ); |
| 90 | |
| 91 | INTERNAL int |
| 92 | VmbusChannelSendPacketPageBuffer( |
| 93 | VMBUS_CHANNEL *Channel, |
| 94 | PAGE_BUFFER PageBuffers[], |
| 95 | UINT32 PageCount, |
| 96 | PVOID Buffer, |
| 97 | UINT32 BufferLen, |
| 98 | UINT64 RequestId |
| 99 | ); |
| 100 | |
| 101 | INTERNAL int |
| 102 | VmbusChannelSendPacketMultiPageBuffer( |
| 103 | VMBUS_CHANNEL *Channel, |
| 104 | MULTIPAGE_BUFFER *MultiPageBuffer, |
| 105 | PVOID Buffer, |
| 106 | UINT32 BufferLen, |
| 107 | UINT64 RequestId |
| 108 | ); |
| 109 | |
| 110 | INTERNAL int |
| 111 | VmbusChannelEstablishGpadl( |
| 112 | VMBUS_CHANNEL *Channel, |
| 113 | PVOID Kbuffer, // from kmalloc() |
| 114 | UINT32 Size, // page-size multiple |
| 115 | UINT32 *GpadlHandle |
| 116 | ); |
| 117 | |
| 118 | INTERNAL int |
| 119 | VmbusChannelTeardownGpadl( |
| 120 | VMBUS_CHANNEL *Channel, |
| 121 | UINT32 GpadlHandle |
| 122 | ); |
| 123 | |
| 124 | INTERNAL int |
| 125 | VmbusChannelRecvPacket( |
| 126 | VMBUS_CHANNEL *Channel, |
| 127 | PVOID Buffer, |
| 128 | UINT32 BufferLen, |
| 129 | UINT32* BufferActualLen, |
| 130 | UINT64* RequestId |
| 131 | ); |
| 132 | |
| 133 | INTERNAL int |
| 134 | VmbusChannelRecvPacketRaw( |
| 135 | VMBUS_CHANNEL *Channel, |
| 136 | PVOID Buffer, |
| 137 | UINT32 BufferLen, |
| 138 | UINT32* BufferActualLen, |
| 139 | UINT64* RequestId |
| 140 | ); |
| 141 | |
| 142 | INTERNAL void |
| 143 | VmbusChannelOnChannelEvent( |
| 144 | VMBUS_CHANNEL *Channel |
| 145 | ); |
| 146 | |
| 147 | INTERNAL void |
| 148 | VmbusChannelGetDebugInfo( |
| 149 | VMBUS_CHANNEL *Channel, |
| 150 | VMBUS_CHANNEL_DEBUG_INFO *DebugInfo |
| 151 | ); |
| 152 | |
| 153 | INTERNAL void |
| 154 | VmbusChannelOnTimer( |
| 155 | void *Context |
| 156 | ); |
| 157 | #endif //_CHANNEL_H_ |