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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/hwpf/src/plat/plat_hw_access.C $ */
/* */
/* OpenPOWER sbe Project */
/* */
/* Contributors Listed Below - COPYRIGHT 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 */
#include <fapi2.H>
#include "plat_hw_access.H"
#include "p9_perv_scom_addresses.H"
namespace fapi2
{
ReturnCode getRing_setup(const uint32_t i_ringAddress,
const RingMode i_ringMode)
{
return FAPI2_RC_SUCCESS;
}
ReturnCode getRing_granule_data(const uint32_t i_ringAddress,
uint64_t *o_data,
const uint32_t i_bitShiftValue)
{
return FAPI2_RC_SUCCESS;
}
ReturnCode getRing_verifyAndcleanup(const uint32_t i_ringAddress,
const RingMode i_ringMode)
{
return FAPI2_RC_SUCCESS;
}
uint32_t getscom_abs_wrap(const uint32_t i_addr, uint64_t *o_data)
{
uint32_t l_rc = 0;
FAPI_INF("getScom: address: 0x%08X", i_addr);
l_rc = getscom_abs(i_addr, o_data);
if( PIB_NO_ERROR != l_rc )
{
l_rc = p9_pibErrRetry( i_addr, o_data, l_rc, true);
}
FAPI_INF("getScom: returned rc: 0x%08X, data HI: 0x%08X, "
"data LO: 0x%08X", l_rc, (*o_data >> 32),
static_cast<uint32_t>(*o_data & 0xFFFFFFFF));
return l_rc;
}
uint32_t putscom_abs_wrap(const uint32_t i_addr, uint64_t i_data)
{
uint32_t l_rc = 0;
FAPI_INF("putScom: address: 0x%08X, data HI: 0x%08X, data LO: 0x%08X",
i_addr, (i_data >> 32),
static_cast<uint32_t>(i_data & 0xFFFFFFFF));
l_rc = putscom_abs(i_addr, i_data);
if( PIB_NO_ERROR != l_rc )
{
l_rc = p9_pibErrRetry( i_addr, &i_data, l_rc, false);
}
FAPI_INF("putScom: returned rc: 0x%08X", l_rc);
return l_rc;
}
uint32_t p9_pibErrRetry( const uint32_t i_addr, uint64_t *io_data,
const uint8_t i_pibErr, const bool i_isRead)
{
FAPI_INF("Entering p9_pibErrRetry");
static const uint8_t MAX_RETRIES = 2;
static const uint64_t REG_BIT0 = (uint64_t)(0x1)<<63;
uint8_t l_retryCount = 0;
uint32_t pibErr = i_pibErr;
do
{
// Only retry for parity and timeout errors
if (( i_pibErr != PIB_PARITY_ERROR )
&& ( i_pibErr != PIB_TIMEOUT_ERROR ))
{
break;
}
for(l_retryCount = 0; l_retryCount < MAX_RETRIES; l_retryCount++)
{
// RESET_PCB: Reset all PCB elements outside of the standby domain
pibErr = putscom_abs( PERV_PIB_RESET_REG, REG_BIT0 );
if( pibErr ) break;
// RESET_PCB: clear it again
pibErr = putscom_abs( PERV_PIB_RESET_REG, 0);
if( pibErr ) break;
FAPI_DBG( "*** Retry %i ***", l_retryCount );
if ( i_isRead )
{
pibErr = getscom_abs(i_addr, io_data);
}
else
{
pibErr = putscom_abs(i_addr, *io_data);
}
if( PIB_NO_ERROR == pibErr )
{
FAPI_INF("Read/Write Retry Successful");
break;
}
if ( pibErr != i_pibErr ) break;
}
}while(0);
FAPI_INF("Exiting p9_pibErrRetry");
return pibErr;
}
};
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