| /* |
| * |
| * 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 _VMBUS_PRIVATE_H_ |
| #define _VMBUS_PRIVATE_H_ |
| |
| #include "Hv.h" |
| #include "include/VmbusApi.h" |
| #include "Channel.h" |
| #include "ChannelMgmt.h" |
| #include "ChannelInterface.h" |
| //#include "ChannelMessages.h" |
| #include "RingBuffer.h" |
| //#include "Packet.h" |
| #include "include/List.h" |
| |
| // |
| // Defines |
| // |
| |
| // Maximum channels is determined by the size of the interrupt page which is PAGE_SIZE. 1/2 of PAGE_SIZE is for |
| // send endpoint interrupt and the other is receive endpoint interrupt |
| #define MAX_NUM_CHANNELS (PAGE_SIZE >> 1) << 3 // 16348 channels |
| |
| // The value here must be in multiple of 32 |
| // TODO: Need to make this configurable |
| #define MAX_NUM_CHANNELS_SUPPORTED 256 |
| |
| // |
| // Data types |
| // |
| |
| typedef enum { |
| Disconnected, |
| Connecting, |
| Connected, |
| Disconnecting |
| } VMBUS_CONNECT_STATE; |
| |
| #define MAX_SIZE_CHANNEL_MESSAGE HV_MESSAGE_PAYLOAD_BYTE_COUNT |
| |
| typedef struct _VMBUS_CONNECTION { |
| |
| VMBUS_CONNECT_STATE ConnectState; |
| |
| u32 NextGpadlHandle; |
| |
| // Represents channel interrupts. Each bit position |
| // represents a channel. |
| // When a channel sends an interrupt via VMBUS, it |
| // finds its bit in the sendInterruptPage, set it and |
| // calls Hv to generate a port event. The other end |
| // receives the port event and parse the recvInterruptPage |
| // to see which bit is set |
| void * InterruptPage; |
| void * SendInterruptPage; |
| void * RecvInterruptPage; |
| |
| // 2 pages - 1st page for parent->child notification and 2nd is child->parent notification |
| void * MonitorPages; |
| LIST_ENTRY ChannelMsgList; |
| HANDLE ChannelMsgLock; |
| |
| // List of channels |
| LIST_ENTRY ChannelList; |
| HANDLE ChannelLock; |
| |
| HANDLE WorkQueue; |
| } VMBUS_CONNECTION; |
| |
| |
| typedef struct _VMBUS_MSGINFO { |
| // Bookkeeping stuff |
| LIST_ENTRY MsgListEntry; |
| |
| // Synchronize the request/response if needed |
| HANDLE WaitEvent; |
| |
| // The message itself |
| unsigned char Msg[0]; |
| } VMBUS_MSGINFO; |
| |
| |
| // |
| // Externs |
| // |
| extern VMBUS_CONNECTION gVmbusConnection; |
| |
| // |
| // General vmbus interface |
| // |
| static DEVICE_OBJECT* |
| VmbusChildDeviceCreate( |
| GUID deviceType, |
| GUID deviceInstance, |
| void *context); |
| |
| static int |
| VmbusChildDeviceAdd( |
| DEVICE_OBJECT* Device); |
| |
| static void |
| VmbusChildDeviceRemove( |
| DEVICE_OBJECT* Device); |
| |
| //static void |
| //VmbusChildDeviceDestroy( |
| // DEVICE_OBJECT*); |
| |
| static VMBUS_CHANNEL* |
| GetChannelFromRelId( |
| u32 relId |
| ); |
| |
| // |
| // Connection interface |
| // |
| static int |
| VmbusConnect( |
| void |
| ); |
| |
| static int |
| VmbusDisconnect( |
| void |
| ); |
| |
| static int |
| VmbusPostMessage( |
| void * buffer, |
| SIZE_T bufSize |
| ); |
| |
| static int |
| VmbusSetEvent( |
| u32 childRelId |
| ); |
| |
| static void |
| VmbusOnEvents( |
| void |
| ); |
| |
| |
| #endif // _VMBUS_PRIVATE_H_ |