163 lines
5.0 KiB
C
163 lines
5.0 KiB
C
/*
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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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/* This file contains the class for HV events in the system. */
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#ifndef _ASM_POWERPC_ISERIES_HV_LP_EVENT_H
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#define _ASM_POWERPC_ISERIES_HV_LP_EVENT_H
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#include <asm/types.h>
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#include <asm/ptrace.h>
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#include <asm/iseries/hv_types.h>
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#include <asm/iseries/hv_call_event.h>
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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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struct HvLpEvent {
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u8 flags; /* 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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typedef void (*LpEventHandler)(struct HvLpEvent *);
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/* Register a handler for an event type - returns 0 on success */
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extern int HvLpEvent_registerHandler(HvLpEvent_Type eventType,
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LpEventHandler hdlr);
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/*
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* Unregister a handler for an event type
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*
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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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*/
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extern int HvLpEvent_unregisterHandler(HvLpEvent_Type eventType);
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/*
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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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*/
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extern int HvLpEvent_openPath(HvLpEvent_Type eventType, HvLpIndex lpIndex);
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/*
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* Close an Lp Event Path for a type and partition
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* returns 0 on success
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*/
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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 HV_LP_EVENT_INT 0x01
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#define HV_LP_EVENT_DO_ACK 0x02
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#define HV_LP_EVENT_DEFERRED_ACK 0x04
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#define HV_LP_EVENT_VALID 0x80
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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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static inline int hvlpevent_is_valid(struct HvLpEvent *h)
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{
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return h->flags & HV_LP_EVENT_VALID;
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}
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static inline void hvlpevent_invalidate(struct HvLpEvent *h)
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{
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h->flags &= ~ HV_LP_EVENT_VALID;
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}
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static inline int hvlpevent_is_int(struct HvLpEvent *h)
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{
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return h->flags & HV_LP_EVENT_INT;
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}
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static inline int hvlpevent_is_ack(struct HvLpEvent *h)
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{
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return !hvlpevent_is_int(h);
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}
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static inline int hvlpevent_need_ack(struct HvLpEvent *h)
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{
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return h->flags & HV_LP_EVENT_DO_ACK;
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}
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#endif /* _ASM_POWERPC_ISERIES_HV_LP_EVENT_H */
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