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3e7ee490 HJ |
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 | ||
ff39524b | 28 | #include "channel_mgmt.h" |
3e7ee490 | 29 | |
8dc0a06a | 30 | /* The format must be the same as struct vmdata_gpa_direct */ |
0cf4fa80 | 31 | struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER { |
46a05253 GKH |
32 | u16 Type; |
33 | u16 DataOffset8; | |
34 | u16 Length8; | |
35 | u16 Flags; | |
36 | u64 TransactionId; | |
37 | u32 Reserved; | |
38 | u32 RangeCount; | |
ee3d7ddf | 39 | struct hv_page_buffer Range[MAX_PAGE_BUFFER_COUNT]; |
46a05253 | 40 | } __attribute__((packed)); |
3e7ee490 | 41 | |
8dc0a06a | 42 | /* The format must be the same as struct vmdata_gpa_direct */ |
3fcc523a | 43 | struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER { |
46a05253 GKH |
44 | u16 Type; |
45 | u16 DataOffset8; | |
46 | u16 Length8; | |
47 | u16 Flags; | |
48 | u64 TransactionId; | |
49 | u32 Reserved; | |
50 | u32 RangeCount; /* Always 1 in this case */ | |
ee3d7ddf | 51 | struct hv_multipage_buffer Range; |
46a05253 GKH |
52 | } __attribute__((packed)); |
53 | ||
54 | ||
aded7165 | 55 | extern int VmbusChannelOpen(struct vmbus_channel *channel, |
46a05253 GKH |
56 | u32 SendRingBufferSize, |
57 | u32 RecvRingBufferSize, | |
58 | void *UserData, | |
59 | u32 UserDataLen, | |
79035069 | 60 | void(*OnChannelCallback)(void *context), |
46a05253 GKH |
61 | void *Context); |
62 | ||
aded7165 | 63 | extern void VmbusChannelClose(struct vmbus_channel *channel); |
46a05253 | 64 | |
aded7165 | 65 | extern int VmbusChannelSendPacket(struct vmbus_channel *channel, |
46a05253 GKH |
66 | const void *Buffer, |
67 | u32 BufferLen, | |
68 | u64 RequestId, | |
8dc0a06a | 69 | enum vmbus_packet_type Type, |
46a05253 GKH |
70 | u32 Flags); |
71 | ||
aded7165 | 72 | extern int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *channel, |
ee3d7ddf | 73 | struct hv_page_buffer PageBuffers[], |
46a05253 GKH |
74 | u32 PageCount, |
75 | void *Buffer, | |
76 | u32 BufferLen, | |
77 | u64 RequestId); | |
78 | ||
aded7165 | 79 | extern int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *channel, |
ee3d7ddf | 80 | struct hv_multipage_buffer *mpb, |
46a05253 GKH |
81 | void *Buffer, |
82 | u32 BufferLen, | |
83 | u64 RequestId); | |
84 | ||
aded7165 | 85 | extern int VmbusChannelEstablishGpadl(struct vmbus_channel *channel, |
46a05253 GKH |
86 | void *Kbuffer, |
87 | u32 Size, | |
88 | u32 *GpadlHandle); | |
89 | ||
aded7165 | 90 | extern int VmbusChannelTeardownGpadl(struct vmbus_channel *channel, |
46a05253 GKH |
91 | u32 GpadlHandle); |
92 | ||
aded7165 | 93 | extern int VmbusChannelRecvPacket(struct vmbus_channel *channel, |
46a05253 GKH |
94 | void *Buffer, |
95 | u32 BufferLen, | |
96 | u32 *BufferActualLen, | |
97 | u64 *RequestId); | |
98 | ||
aded7165 | 99 | extern int VmbusChannelRecvPacketRaw(struct vmbus_channel *channel, |
46a05253 GKH |
100 | void *Buffer, |
101 | u32 BufferLen, | |
102 | u32 *BufferActualLen, | |
103 | u64 *RequestId); | |
104 | ||
aded7165 | 105 | extern void VmbusChannelOnChannelEvent(struct vmbus_channel *channel); |
46a05253 | 106 | |
aded7165 GKH |
107 | extern void VmbusChannelGetDebugInfo(struct vmbus_channel *channel, |
108 | struct vmbus_channel_debug_info *debug); | |
46a05253 GKH |
109 | |
110 | extern void VmbusChannelOnTimer(unsigned long data); | |
111 | ||
454f18a9 | 112 | #endif /* _CHANNEL_H_ */ |