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/*
* 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 _ASM_POWERPC_ISERIES_HV_LP_EVENT_H
#define _ASM_POWERPC_ISERIES_HV_LP_EVENT_H
#include <asm/types.h>
#include <asm/ptrace.h>
#include <asm/iseries/hv_types.h>
#include <asm/iseries/hv_call_event.h>
/*
* HvLpEvent is the structure for Lp Event messages passed between
* partitions through PLIC.
*/
struct HvLpEvent {
u8 flags; /* 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 */
};
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 HV_LP_EVENT_INT 0x01
#define HV_LP_EVENT_DO_ACK 0x02
#define HV_LP_EVENT_DEFERRED_ACK 0x04
#define HV_LP_EVENT_VALID 0x80
#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
static inline int hvlpevent_is_valid(struct HvLpEvent *h)
{
return h->flags & HV_LP_EVENT_VALID;
}
static inline void hvlpevent_invalidate(struct HvLpEvent *h)
{
h->flags &= ~ HV_LP_EVENT_VALID;
}
static inline int hvlpevent_is_int(struct HvLpEvent *h)
{
return h->flags & HV_LP_EVENT_INT;
}
static inline int hvlpevent_is_ack(struct HvLpEvent *h)
{
return !hvlpevent_is_int(h);
}
static inline int hvlpevent_need_ack(struct HvLpEvent *h)
{
return h->flags & HV_LP_EVENT_DO_ACK;
}
#endif /* _ASM_POWERPC_ISERIES_HV_LP_EVENT_H */
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