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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: import/chips/p9/procedures/ppe/pk/trace/pk_trace_big.c $ */
/* */
/* OpenPOWER sbe Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
//-----------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2014
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//-----------------------------------------------------------------------------
/// \file pk_trace_big.c
/// \brief PK Trace function that supports up to four 32-bit parameters
///
/// The pk_trace_big function is only called (via some macro magic) if the
/// caller passes in a single parameter (not including the format string)
/// that is larger than 16 bits to the PK_TRACE(...) macro.
///
#include "pk.h"
#include "pk_trace.h"
#if (PK_TRACE_SUPPORT && PK_TIMER_SUPPORT)
void pk_trace_big(uint32_t i_hash_and_count,
uint64_t i_parm1, uint64_t i_parm2)
{
PkTraceBig footer;
PkTraceBig* footer_ptr;
PkTraceState state;
uint64_t* ptr64;
uint64_t tb64;
PkMachineContext ctx;
uint32_t parm_size;
uint32_t cur_offset;
uint32_t footer_offset;
//fill in the footer data
tb64 = pk_timebase_get();
footer.parms.word32 = i_hash_and_count; //this has the parm count and hash
state.tbu32 = tb64 >> 32;
footer.time_format.word32 = tb64 & 0x00000000ffffffffull;
footer.time_format.format = PK_TRACE_FORMAT_BIG;
//round up to 8 byte boundary
if(footer.parms.num_parms <= 2)
{
parm_size = 8;
}
else
{
parm_size = 16;
}
//*****The following operations must be done atomically*****
pk_critical_section_enter(&ctx);
//load in the offset in the cb for the entry we are adding
cur_offset = g_pk_trace_buf.state.offset;
//Find the offset for the footer (at the end of the entry)
footer_offset = cur_offset + parm_size;
//calculate the address of the footer
ptr64 = (uint64_t*)&g_pk_trace_buf.cb[footer_offset & PK_TRACE_CB_MASK];
//calculate the offset for the next entry in the cb
state.offset = footer_offset + sizeof(PkTraceBig);
#ifdef PK_TRACE_BUFFER_WRAP_MARKER
//insert marker to indicate when circular buffer wraps
if ((state.offset & PK_TRACE_SZ) ^ G_wrap_mask)
{
G_wrap_mask = state.offset & PK_TRACE_SZ;
asm volatile ("tw 0, 31, 31");
}
#endif
//update the cb state (tbu and offset)
g_pk_trace_buf.state.word64 = state.word64;
//write the data to the circular buffer including the
//timesamp, string hash, and 16bit parameter
*ptr64 = footer.word64;
//*******************exit the critical section***************
pk_critical_section_exit(&ctx);
//write parm values to the circular buffer
footer_ptr = (PkTraceBig*)ptr64;
ptr64 = (uint64_t*)&g_pk_trace_buf.cb[cur_offset & PK_TRACE_CB_MASK];
*ptr64 = i_parm1;
if(parm_size > 8)
{
ptr64 = (uint64_t*)&g_pk_trace_buf.cb[(cur_offset + 8) & PK_TRACE_CB_MASK];
*ptr64 = i_parm2;
}
//Mark the trace entry update as being completed
footer_ptr->parms.complete = 1;
}
#endif
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