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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/lib/p9_sbe_ppe_utils.C $ */
/* */
/* OpenPOWER sbe Project */
/* */
/* Contributors Listed Below - COPYRIGHT 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 */
///
/// @file p9_sbe_ppe_utils.C
/// @brief Commonly used PPE utilities on the SBE
///
/// *HWP HW Owner : Greg Still <stillgs@us.ibm.com>
/// *HWP HW Backup Owner : Brian Vanderpool <vanderp@us.ibm.com>
/// *HWP FW Owner : Amit Tendolkar <amit.tendolkar@in.ibm.com>
/// *HWP Team : PM
/// *HWP Level : 2
/// *HWP Consumed by : SBE
///
/// @verbatim
///
/// @endverbatim
//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include <fapi2.H>
#include <p9_sbe_ppe_utils.H>
#include <p9_hcd_common.H>
#include <p9_misc_scom_addresses_fld.H>
//-----------------------------------------------------------------------------
uint32_t ppe_getMxsprInstruction ( const uint32_t i_opcode,
const uint16_t i_Rs,
const uint16_t i_Spr )
{
uint32_t mxsprInstOpcode = 0;
uint32_t temp = (( i_Spr & 0x03FF ) << 11);
mxsprInstOpcode = ( temp & 0x0000F800 ) << 5;
mxsprInstOpcode |= ( temp & 0x001F0000 ) >> 5;
mxsprInstOpcode |= i_opcode;
mxsprInstOpcode |= ( i_Rs & 0x001F ) << 21;
return mxsprInstOpcode;
}
//-----------------------------------------------------------------------------
fapi2::ReturnCode ppe_pollHaltState(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
const uint64_t i_base_address)
{
fapi2::buffer<uint64_t> l_data64;
// Halt state entry should be very fast on PPEs (eg nanoseconds)
// Try only using the SCOM access time to delay.
uint32_t l_timeout_count = 20;
do
{
FAPI_TRY(getScom ( i_target,
i_base_address + PPE_XIRAMDBG,
l_data64 ),
"Failed reading XIRAMDBG register!" );
}
while ((! l_data64.getBit<PU_PPE_XIRAMDBG_XSR_HS>()) &&
(--l_timeout_count != 0));
FAPI_ASSERT ((l_data64.getBit<PU_PPE_XIRAMDBG_XSR_HS>()),
fapi2::SBE_PPE_UTILS_HALT_TIMEOUT_ERR()
.set_TARGET(i_target)
.set_ADDRESS(i_base_address),
"PPE Halt Timeout!");
fapi_try_exit:
return fapi2::current_err;
}
//-----------------------------------------------------------------------------
fapi2::ReturnCode ppe_halt(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
const uint64_t i_base_address)
{
fapi2::buffer<uint64_t> l_data64;
FAPI_TRY ( getScom ( i_target,
i_base_address + PPE_XIRAMDBG,
l_data64 ),
"Error reading PPE Halt State" );
// Halt the PPE only if it is not already halted
if (! l_data64.getBit<PU_PPE_XIRAMDBG_XSR_HS>())
{
FAPI_INF(" Send HALT command via XCR...");
l_data64.flush<0>().insertFromRight(p9hcd::HALT, PU_PPE_XIXCR_XCR,
PU_PPE_XIXCR_XCR_LEN);
FAPI_TRY(putScom(i_target, i_base_address + PPE_XIXCR, l_data64),
"Error in PUTSCOM in XCR to generate Halt condition");
FAPI_TRY(ppe_pollHaltState(i_target, i_base_address));
}
fapi_try_exit:
return fapi2::current_err;
}
//-----------------------------------------------------------------------------
fapi2::ReturnCode ppe_RAMRead(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
const uint64_t i_base_address,
const fapi2::buffer<uint64_t>& i_instruction,
fapi2::buffer<uint32_t>& o_data)
{
fapi2::buffer<uint64_t> l_data64;
FAPI_TRY(ppe_pollHaltState(i_target, i_base_address));
FAPI_TRY(fapi2::putScom(i_target, i_base_address + PPE_XIRAMEDR, i_instruction));
FAPI_TRY(ppe_pollHaltState(i_target, i_base_address));
FAPI_TRY(fapi2::getScom(i_target, i_base_address + PPE_XIRAMDBG, l_data64),
"Error in GETSCOM");
l_data64.extractToRight(o_data, 32, 32);
FAPI_DBG(" RAMREAD o_data: 0X%08X", o_data);
fapi_try_exit:
return fapi2::current_err;
}
//-----------------------------------------------------------------------------
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