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+/*
+ * HvLpEvent.h
+ * Copyright (C) 2001 Mike Corrigan IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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
+ */
+
+//======================================================================
+//
+// This file contains the class for HV events in the system.
+//
+//=====================================================================
+#ifndef _HVLPEVENT_H
+#define _HVLPEVENT_H
+
+#include <asm/types.h>
+#include <asm/ptrace.h>
+#include <asm/iSeries/HvTypes.h>
+#include <asm/iSeries/HvCallEvent.h>
+
+//=====================================================================
+//
+// HvLpEvent is the structure for Lp Event messages passed between
+// partitions through PLIC.
+//
+//=====================================================================
+
+struct HvEventFlags
+{
+ u8 xValid:1; // Indicates a valid request x00-x00
+ u8 xRsvd1:4; // Reserved ...
+ u8 xAckType:1; // Immediate or deferred ...
+ u8 xAckInd:1; // Indicates if ACK required ...
+ u8 xFunction:1; // Interrupt or Acknowledge ...
+};
+
+
+struct HvLpEvent
+{
+ struct HvEventFlags xFlags; // Event flags x00-x00
+ u8 xType; // Type of message x01-x01
+ u16 xSubtype; // Subtype for event x02-x03
+ u8 xSourceLp; // Source LP x04-x04
+ u8 xTargetLp; // Target LP x05-x05
+ u8 xSizeMinus1; // Size of Derived class - 1 x06-x06
+ u8 xRc; // RC for Ack flows x07-x07
+ u16 xSourceInstanceId; // Source sides instance id x08-x09
+ u16 xTargetInstanceId; // Target sides instance id x0A-x0B
+ union {
+ u32 xSubtypeData; // Data usable by the subtype x0C-x0F
+ u16 xSubtypeDataShort[2]; // Data as 2 shorts
+ u8 xSubtypeDataChar[4]; // Data as 4 chars
+ } x;
+
+ u64 xCorrelationToken; // Unique value for source/type x10-x17
+};
+
+// Lp Event handler function
+typedef void (*LpEventHandler)(struct HvLpEvent *, struct pt_regs *);
+
+// Register a handler for an event type
+// returns 0 on success
+extern int HvLpEvent_registerHandler( HvLpEvent_Type eventType, LpEventHandler hdlr);
+
+// Unregister a handler for an event type
+// This call will sleep until the handler being removed is guaranteed to
+// be no longer executing on any CPU. Do not call with locks held.
+//
+// returns 0 on success
+// Unregister will fail if there are any paths open for the type
+extern int HvLpEvent_unregisterHandler( HvLpEvent_Type eventType );
+
+// Open an Lp Event Path for an event type
+// returns 0 on success
+// openPath will fail if there is no handler registered for the event type.
+// The lpIndex specified is the partition index for the target partition
+// (for VirtualIo, VirtualLan and SessionMgr) other types specify zero)
+extern int HvLpEvent_openPath( HvLpEvent_Type eventType, HvLpIndex lpIndex );
+
+
+// Close an Lp Event Path for a type and partition
+// returns 0 on sucess
+extern int HvLpEvent_closePath( HvLpEvent_Type eventType, HvLpIndex lpIndex );
+
+#define HvLpEvent_Type_Hypervisor 0
+#define HvLpEvent_Type_MachineFac 1
+#define HvLpEvent_Type_SessionMgr 2
+#define HvLpEvent_Type_SpdIo 3
+#define HvLpEvent_Type_VirtualBus 4
+#define HvLpEvent_Type_PciIo 5
+#define HvLpEvent_Type_RioIo 6
+#define HvLpEvent_Type_VirtualLan 7
+#define HvLpEvent_Type_VirtualIo 8
+#define HvLpEvent_Type_NumTypes 9
+
+#define HvLpEvent_Rc_Good 0
+#define HvLpEvent_Rc_BufferNotAvailable 1
+#define HvLpEvent_Rc_Cancelled 2
+#define HvLpEvent_Rc_GenericError 3
+#define HvLpEvent_Rc_InvalidAddress 4
+#define HvLpEvent_Rc_InvalidPartition 5
+#define HvLpEvent_Rc_InvalidSize 6
+#define HvLpEvent_Rc_InvalidSubtype 7
+#define HvLpEvent_Rc_InvalidSubtypeData 8
+#define HvLpEvent_Rc_InvalidType 9
+#define HvLpEvent_Rc_PartitionDead 10
+#define HvLpEvent_Rc_PathClosed 11
+#define HvLpEvent_Rc_SubtypeError 12
+
+#define HvLpEvent_Function_Ack 0
+#define HvLpEvent_Function_Int 1
+
+#define HvLpEvent_AckInd_NoAck 0
+#define HvLpEvent_AckInd_DoAck 1
+
+#define HvLpEvent_AckType_ImmediateAck 0
+#define HvLpEvent_AckType_DeferredAck 1
+
+#define HvLpDma_Direction_LocalToRemote 0
+#define HvLpDma_Direction_RemoteToLocal 1
+
+#define HvLpDma_AddressType_TceIndex 0
+#define HvLpDma_AddressType_RealAddress 1
+
+#define HvLpDma_Rc_Good 0
+#define HvLpDma_Rc_Error 1
+#define HvLpDma_Rc_PartitionDead 2
+#define HvLpDma_Rc_PathClosed 3
+#define HvLpDma_Rc_InvalidAddress 4
+#define HvLpDma_Rc_InvalidLength 5
+
+#endif // _HVLPEVENT_H
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