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Diffstat (limited to 'include/asm-ppc64/iSeries/ItLpQueue.h')
-rw-r--r--include/asm-ppc64/iSeries/ItLpQueue.h84
1 files changed, 38 insertions, 46 deletions
diff --git a/include/asm-ppc64/iSeries/ItLpQueue.h b/include/asm-ppc64/iSeries/ItLpQueue.h
index 4f4dde2a638..393299e04d7 100644
--- a/include/asm-ppc64/iSeries/ItLpQueue.h
+++ b/include/asm-ppc64/iSeries/ItLpQueue.h
@@ -1,17 +1,17 @@
/*
* ItLpQueue.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
@@ -19,54 +19,54 @@
#ifndef _ITLPQUEUE_H
#define _ITLPQUEUE_H
-//=============================================================================
-//
-// This control block defines the simple LP queue structure that is
-// shared between the hypervisor (PLIC) and the OS in order to send
-// events to an LP.
-//
+/*
+ * This control block defines the simple LP queue structure that is
+ * shared between the hypervisor (PLIC) and the OS in order to send
+ * events to an LP.
+ */
#include <asm/types.h>
#include <asm/ptrace.h>
struct HvLpEvent;
-#define ITMaxLpQueues 8
+#define ITMaxLpQueues 8
#define NotUsed 0 // Queue will not be used by PLIC
#define DedicatedIo 1 // Queue dedicated to IO processor specified
#define DedicatedLp 2 // Queue dedicated to LP specified
#define Shared 3 // Queue shared for both IO and LP
-#define LpEventStackSize 4096
-#define LpEventMaxSize 256
-#define LpEventAlign 64
+#define LpEventStackSize 4096
+#define LpEventMaxSize 256
+#define LpEventAlign 64
-struct ItLpQueue
-{
-//
-// The xSlicCurEventPtr is the pointer to the next event stack entry that will
-// become valid. The OS must peek at this entry to determine if it is valid.
-// PLIC will set the valid indicator as the very last store into that entry.
-//
-// When the OS has completed processing of the event then it will mark the event
-// as invalid so that PLIC knows it can store into that event location again.
-//
-// If the event stack fills and there are overflow events, then PLIC will set
-// the xPlicOverflowIntPending flag in which case the OS will have to fetch the
-// additional LP events once they have drained the event stack.
-//
-// The first 16-bytes are known by both the OS and PLIC. The remainder of the
-// cache line is for use by the OS.
-//
-//=============================================================================
+struct ItLpQueue {
+/*
+ * The xSlicCurEventPtr is the pointer to the next event stack entry
+ * that will become valid. The OS must peek at this entry to determine
+ * if it is valid. PLIC will set the valid indicator as the very last
+ * store into that entry.
+ *
+ * When the OS has completed processing of the event then it will mark
+ * the event as invalid so that PLIC knows it can store into that event
+ * location again.
+ *
+ * If the event stack fills and there are overflow events, then PLIC
+ * will set the xPlicOverflowIntPending flag in which case the OS will
+ * have to fetch the additional LP events once they have drained the
+ * event stack.
+ *
+ * The first 16-bytes are known by both the OS and PLIC. The remainder
+ * of the cache line is for use by the OS.
+ */
u8 xPlicOverflowIntPending;// 0x00 Overflow events are pending
u8 xPlicStatus; // 0x01 DedicatedIo or DedicatedLp or NotUsed
u16 xSlicLogicalProcIndex; // 0x02 Logical Proc Index for correlation
u8 xPlicRsvd[12]; // 0x04
- char* xSlicCurEventPtr; // 0x10
- char* xSlicLastValidEventPtr; // 0x18
- char* xSlicEventStackPtr; // 0x20
+ char *xSlicCurEventPtr; // 0x10
+ char *xSlicLastValidEventPtr; // 0x18
+ char *xSlicEventStackPtr; // 0x20
u8 xIndex; // 0x28 unique sequential index.
u8 xSlicRsvd[3]; // 0x29-2b
u32 xInUseWord; // 0x2C
@@ -76,17 +76,9 @@ struct ItLpQueue
extern struct ItLpQueue xItLpQueue;
-extern struct HvLpEvent * ItLpQueue_getNextLpEvent( struct ItLpQueue * );
-extern int ItLpQueue_isLpIntPending( struct ItLpQueue * );
-extern unsigned ItLpQueue_process( struct ItLpQueue *, struct pt_regs * );
-extern void ItLpQueue_clearValid( struct HvLpEvent * );
-
-static __inline__ void process_iSeries_events( void )
-{
- __asm__ __volatile__ (
- " li 0,0x5555 \n\
- sc"
- : : : "r0", "r3" );
-}
+extern struct HvLpEvent *ItLpQueue_getNextLpEvent(struct ItLpQueue *);
+extern int ItLpQueue_isLpIntPending(struct ItLpQueue *);
+extern unsigned ItLpQueue_process(struct ItLpQueue *, struct pt_regs *);
+extern void ItLpQueue_clearValid(struct HvLpEvent *);
#endif /* _ITLPQUEUE_H */