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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: import/chips/p9/procedures/ppe_closed/pgpe/pstate_gpe/p9_pgpe_optrace.c $ */
/* */
/* OpenPOWER HCODE Project */
/* */
/* COPYRIGHT 2016,2017 */
/* [+] 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 */
#include "pk.h"
#include "p9_pgpe.h"
#include "p9_pgpe_optrace.h"
#include "p9_hcd_memmap_occ_sram.H"
#define ADDRESS_MAX OCC_SRAM_PGPE_OPTRACE_ADDR + OCC_SRAM_PGPE_OPTRACE_SIZE - 0x8
TraceData_t G_pgpe_optrace_data;
uint32_t G_address;
uint32_t G_data;
uint32_t G_lastDisable;
void p9_pgpe_optrace_init() //sets up address and initializes buffer to 0's
{
G_lastDisable = 0;
G_address = OCC_SRAM_PGPE_OPTRACE_ADDR;
do
{
out32(G_address, 0);
G_address += 4;
}
while(G_address <= ADDRESS_MAX);
G_address = OCC_SRAM_PGPE_OPTRACE_ADDR;
}
void p9_pgpe_optrace(uint32_t mark)
{
if(in32(OCB_OCCS2) & PGPE_OPTRACE_DISABLE) //Check to see if tracing is enabled
{
G_lastDisable = 1;
}
else
{
if(G_lastDisable) //Place start trace mark at when first enabled
{
G_lastDisable = 0;
p9_pgpe_optrace(ACK_START_TRACE);
}
uint32_t word_count = ((mark >> 4) & 0x3) + 1;
if((mark & 0x40))//If bit 1 of Mark is set there is a timestamp
{
G_pgpe_optrace_data.word[(word_count - 1)] = (mark << 24) | (in32(OCB_OTBR) & 0xFFFFFF);
}
uint32_t word;
for(word = 0; word < word_count; word++) //write out all words to buffer
{
out32(G_address, G_pgpe_optrace_data.word[word]);
if(G_address == ADDRESS_MAX)
{
G_address = OCC_SRAM_PGPE_OPTRACE_ADDR;
}
else
{
G_address += 0x4;
}
}
out32(ADDRESS_MAX + 0x4, G_address); //this address contains the oldest entry in the buffer
}
}
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