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144 lines
4.8 KiB
144 lines
4.8 KiB
/*
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* HvLpEvent.h
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* Copyright (C) 2001 Mike Corrigan IBM Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//======================================================================
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//
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// This file contains the class for HV events in the system.
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//
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//=====================================================================
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#ifndef _HVLPEVENT_H
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#define _HVLPEVENT_H
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#include <asm/types.h>
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#include <asm/ptrace.h>
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#include <asm/iSeries/HvTypes.h>
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#include <asm/iSeries/HvCallEvent.h>
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//=====================================================================
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//
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// HvLpEvent is the structure for Lp Event messages passed between
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// partitions through PLIC.
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//
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//=====================================================================
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struct HvEventFlags
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{
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u8 xValid:1; // Indicates a valid request x00-x00
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u8 xRsvd1:4; // Reserved ...
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u8 xAckType:1; // Immediate or deferred ...
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u8 xAckInd:1; // Indicates if ACK required ...
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u8 xFunction:1; // Interrupt or Acknowledge ...
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};
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struct HvLpEvent
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{
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struct HvEventFlags xFlags; // Event flags x00-x00
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u8 xType; // Type of message x01-x01
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u16 xSubtype; // Subtype for event x02-x03
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u8 xSourceLp; // Source LP x04-x04
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u8 xTargetLp; // Target LP x05-x05
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u8 xSizeMinus1; // Size of Derived class - 1 x06-x06
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u8 xRc; // RC for Ack flows x07-x07
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u16 xSourceInstanceId; // Source sides instance id x08-x09
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u16 xTargetInstanceId; // Target sides instance id x0A-x0B
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union {
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u32 xSubtypeData; // Data usable by the subtype x0C-x0F
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u16 xSubtypeDataShort[2]; // Data as 2 shorts
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u8 xSubtypeDataChar[4]; // Data as 4 chars
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} x;
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u64 xCorrelationToken; // Unique value for source/type x10-x17
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};
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// Lp Event handler function
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typedef void (*LpEventHandler)(struct HvLpEvent *, struct pt_regs *);
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// Register a handler for an event type
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// returns 0 on success
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extern int HvLpEvent_registerHandler( HvLpEvent_Type eventType, LpEventHandler hdlr);
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// Unregister a handler for an event type
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// This call will sleep until the handler being removed is guaranteed to
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// be no longer executing on any CPU. Do not call with locks held.
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//
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// returns 0 on success
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// Unregister will fail if there are any paths open for the type
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extern int HvLpEvent_unregisterHandler( HvLpEvent_Type eventType );
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// Open an Lp Event Path for an event type
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// returns 0 on success
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// openPath will fail if there is no handler registered for the event type.
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// The lpIndex specified is the partition index for the target partition
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// (for VirtualIo, VirtualLan and SessionMgr) other types specify zero)
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extern int HvLpEvent_openPath( HvLpEvent_Type eventType, HvLpIndex lpIndex );
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// Close an Lp Event Path for a type and partition
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// returns 0 on sucess
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extern int HvLpEvent_closePath( HvLpEvent_Type eventType, HvLpIndex lpIndex );
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#define HvLpEvent_Type_Hypervisor 0
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#define HvLpEvent_Type_MachineFac 1
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#define HvLpEvent_Type_SessionMgr 2
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#define HvLpEvent_Type_SpdIo 3
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#define HvLpEvent_Type_VirtualBus 4
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#define HvLpEvent_Type_PciIo 5
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#define HvLpEvent_Type_RioIo 6
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#define HvLpEvent_Type_VirtualLan 7
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#define HvLpEvent_Type_VirtualIo 8
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#define HvLpEvent_Type_NumTypes 9
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#define HvLpEvent_Rc_Good 0
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#define HvLpEvent_Rc_BufferNotAvailable 1
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#define HvLpEvent_Rc_Cancelled 2
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#define HvLpEvent_Rc_GenericError 3
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#define HvLpEvent_Rc_InvalidAddress 4
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#define HvLpEvent_Rc_InvalidPartition 5
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#define HvLpEvent_Rc_InvalidSize 6
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#define HvLpEvent_Rc_InvalidSubtype 7
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#define HvLpEvent_Rc_InvalidSubtypeData 8
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#define HvLpEvent_Rc_InvalidType 9
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#define HvLpEvent_Rc_PartitionDead 10
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#define HvLpEvent_Rc_PathClosed 11
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#define HvLpEvent_Rc_SubtypeError 12
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#define HvLpEvent_Function_Ack 0
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#define HvLpEvent_Function_Int 1
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#define HvLpEvent_AckInd_NoAck 0
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#define HvLpEvent_AckInd_DoAck 1
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#define HvLpEvent_AckType_ImmediateAck 0
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#define HvLpEvent_AckType_DeferredAck 1
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#define HvLpDma_Direction_LocalToRemote 0
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#define HvLpDma_Direction_RemoteToLocal 1
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#define HvLpDma_AddressType_TceIndex 0
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#define HvLpDma_AddressType_RealAddress 1
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#define HvLpDma_Rc_Good 0
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#define HvLpDma_Rc_Error 1
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#define HvLpDma_Rc_PartitionDead 2
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#define HvLpDma_Rc_PathClosed 3
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#define HvLpDma_Rc_InvalidAddress 4
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#define HvLpDma_Rc_InvalidLength 5
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#endif // _HVLPEVENT_H
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