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diff --git a/src/ssx/pgp/pgp_ocb.h b/src/ssx/pgp/pgp_ocb.h
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+#ifndef __PGP_OCB_H__
+#define __PGP_OCB_H__
+
+// $Id: pgp_ocb.h,v 1.2 2014/02/03 01:30:35 daviddu Exp $
+// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ssx/pgp/pgp_ocb.h,v $
+//-----------------------------------------------------------------------------
+// *! (C) Copyright International Business Machines Corp. 2013
+// *! All Rights Reserved -- Property of IBM
+// *! *** IBM Confidential ***
+//-----------------------------------------------------------------------------
+
+/// \file pgp_ocb.h
+/// \brief OCB unit header. Local and mechanically generated macros and APIs.
+
+#include "ssx.h"
+#include "ppc32.h"
+
+#include "pgp_common.h"
+#include "ocb_register_addresses.h"
+#include "ocb_firmware_registers.h"
+
+#include "ppc405_irq.h"
+
+#define OCB_TIMER0 0
+#define OCB_TIMER1 1
+
+#define OCB_TIMERS 2
+
+#define OCB_TIMER_ONE_SHOT 0
+#define OCB_TIMER_AUTO_RELOAD 1
+
+#define OCB_LW_LOG_SIZE_MIN 3
+#define OCB_LW_LOG_SIZE_MAX 15
+
+#define OCB_INVALID_ARGUMENT_TIMER 0x00622001
+#define OCB_INVALID_ARGUMENT_LW_INIT 0x00622002
+#define OCB_INVALID_ARGUMENT_LW_DISABLE 0x00622003
+#define OCB_INVALID_ARGUMENT_UNTRUST 0x00622004
+
+#ifndef __ASSEMBLER__
+
+int
+ocb_timer_reset(int timer,
+ int auto_reload,
+ int timeout_ns);
+
+#ifdef OCC
+int
+ocb_timer_setup(int timer,
+ int auto_reload,
+ int timeout_ns,
+ SsxIrqHandler handler,
+ void *arg,
+ int priority) INIT_SECTION;
+#else
+int
+ocb_timer_setup(int timer,
+ int auto_reload,
+ int timeout_ns,
+ SsxIrqHandler handler,
+ void *arg,
+ int priority);
+#endif
+
+/// Clear OCB timer status based on the IRQ
+///
+/// This API can be called from OCB timer interrupt handlers, using the IRQ
+/// provided to the handler. No error checks are provided.
+
+static inline void
+ocb_timer_status_clear(SsxIrqId irq)
+{
+ out32(OCB_OTRN(irq - PGP_IRQ_OCC_TIMER0), OCB_OTRN_TIMEOUT);
+}
+
+int
+ocb_linear_window_initialize(int channel, uint32_t base, int log_size);
+
+int
+ocb_linear_window_disable(int channel);
+
+int
+ocb_allow_untrusted_initialize(int channel, int allow_untrusted);
+
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* __PGP_OCB_H__ */
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