1 files changed, 162 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/iseries/hv_lp_event.h b/arch/powerpc/include/asm/iseries/hv_lp_event.h
new file mode 100644
index 00000000000..8f5da7d7720
--- /dev/null
+++ b/arch/powerpc/include/asm/iseries/hv_lp_event.h
@@ -0,0 +1,162 @@
+/*
+ * 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 *);
+
+/* 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 success
+ */
+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 */