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p9_tod_move_tod_to_tb.C
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p9_tod_move_tod_to_tb.C
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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/nest/p9_tod_move_tod_to_tb.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - 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 */
//--------------------------------------------------------------------------
//
//
/// @file p9_tod_move_tod_to_tb.C
/// @brief Procedures to check if move_tod_to_tb works
///
// *HWP HWP Owner Christina Graves clgraves@us.ibm.com
// *HWP FW Owner: Thi Tran thi@us.ibm.com
// *HWP Team: Nest
// *HWP Level: 2
// *HWP Consumed by: None - this is a test for VBU
//
//--------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <p9_tod_move_tod_to_tb.H>
extern "C"
{
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
//---------------------------------------------------------------------------------
// NOTE: description in header
//---------------------------------------------------------------------------------
fapi2::ReturnCode p9_tod_move_tod_to_tb(const tod_topology_node* i_tod_node, const uint8_t i_thread_num,
fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>* i_failingTodProc )
{
fapi2::ReturnCode rc;
fapi2::buffer<uint64_t> data;
fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>* target = i_tod_node->i_target;
uint32_t tod_init_pending_count = 0; // Timeout counter for bits that are cleared by hardware
uint64_t tfmr_state = 0;
uint8_t l_core_id = 0x0;
//bool is_mdmt = true;
FAPI_DBG("Start");
//Get all the cores on this proc chip
auto l_core_targets = target->getChildren<fapi2::TARGET_TYPE_CORE>(fapi2::TARGET_STATE_FUNCTIONAL);
for (auto coreTarget : l_core_targets)
{
//-------Timebase Setup--------------
//Read TFMR
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR register");
//Update TFMR bit (00:15) Timebase settings according to processor frequency
data.insertFromRight((uint32_t)0xFF, TFMR_MAX_CYC_BET_STEPS, TFMR_MAX_CYC_BET_STEPS_LEN);
data.insertFromRight(TFMR_N_CLKS_PER_STEP_4CLK, TFMR_N_CLKS_PER_STEP, TFMR_N_CLKS_PER_STEP_LEN);
data.insertFromRight(TFMR_SYNC_BIT_SEL_16US, TFMR_SYNC_BIT_SEL, TFMR_SYNC_BIT_SEL_LEN);
data.setBit<TFMR_TB_ECLIPZ>();
FAPI_TRY(p9_tod_utils_set_tfmr_reg(coreTarget, i_thread_num, data),
"Could not write timebase settings according to processor frequency");
tod_init_pending_count = 0;
while(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT)
{
FAPI_TRY(fapi2::delay(P9_TOD_UTILS_HW_NS_DELAY, P9_TOD_UTILS_SIM_CYCLE_DELAY), "fapiDelay error");
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR register for polling");
data.extract(tfmr_state, TFMR_STATE_START_BIT, TFMR_STATE_NUM_BITS, 60);
if (tfmr_state == TFMR_STATE_TB_RESET)
{
FAPI_DBG("TFMR in TB_RESET state");
break;
}
++tod_init_pending_count;
}
FAPI_ASSERT(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT,
fapi2::P9_TOD_INIT_TIMEOUT().set_TARGET(target).set_COUNT(tod_init_pending_count),
"TFMR state machine did not go to reset in time!");
//-------Timebase load_tod_mode_tb(switch Timebase to "Not Set" state)
//Update TFMR bit (16) = b'1' load_tod_mod_tb. This prepares the time facility logic to accept a new value for the 64-bit Timebase
data.setBit<TFMR_LOAD_TOD_MOD_TB>();
FAPI_TRY(p9_tod_utils_set_tfmr_reg(coreTarget, i_thread_num, data), "Could not load_tod_mod_tb");
//Poll for TFMR bit (16) = b'0'. Hardware clears the bit when the operation is complete. A timeout is indicated by TFMR bit(54) = b'1'
tod_init_pending_count = 0;
while(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT)
{
FAPI_TRY(fapi2::delay(P9_TOD_UTILS_HW_NS_DELAY, P9_TOD_UTILS_SIM_CYCLE_DELAY), "fapiDelay error");
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR register for polling");
data.extract(tfmr_state, TFMR_STATE_START_BIT, TFMR_STATE_NUM_BITS, 60);
if (!data.getBit<TFMR_LOAD_TOD_MOD_TB>() && (tfmr_state == TFMR_STATE_TB_NOT_SET))
{
FAPI_DBG("TFMR_LOAD_TOD_MOD cleared.");
break;
}
++tod_init_pending_count;
}
FAPI_ASSERT(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT,
fapi2::P9_TOD_INIT_TIMEOUT().set_TARGET(target).set_COUNT(tod_init_pending_count),
"TFMR_LOAD_TOD_MOD did not clear in time!");
//-------TOD interrupt check----------------------
//Read TFMR and check for TFMR(51) = b'0'. This indicates no interrupt pending from the TOD which means no STEP errors were detected, and the external TOD oscillator is operating properly.
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR register to check bit 51");
FAPI_ASSERT(!data.getBit<51>(), fapi2::P9_TOD_INIT_NOT_RUNNING(),
"STEP errors were detected or the external TOD oscillator is not operating properly");
//------Move TOD value to Timebase---------
//Update TFMR bit(18) = b'1' move_chip_tod_to_tb. This prepares the time facility logic to accept a new value after a SYNC boundary occurred
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR to move_chip_tod_to_tb");
data.setBit<TFMR_MOVE_CHIP_TOD_TO_TB>();
FAPI_TRY(p9_tod_utils_set_tfmr_reg(coreTarget, i_thread_num, data), "Could not write TFMR to mvoe chip_tod_to_tb");
//We don't check for TB_SYNC_WAIT since that state is fleeting
tod_init_pending_count = 0;
while(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT)
{
FAPI_TRY(fapi2::delay(P9_TOD_UTILS_HW_NS_DELAY, P9_TOD_UTILS_SIM_CYCLE_DELAY), "fapiDelay error");
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR register for polling");
data.extract(tfmr_state, TFMR_STATE_START_BIT, TFMR_STATE_NUM_BITS, 60);
if (tfmr_state == TFMR_STATE_GET_TOD)
{
FAPI_DBG("TFMR in GET_TOD state");
break;
}
++tod_init_pending_count;
}
FAPI_ASSERT(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT,
fapi2::P9_TOD_INIT_TIMEOUT().set_TARGET(target).set_COUNT(tod_init_pending_count),
"TFMR state machine did not go to get_tod in time!");
//Write TOD_MOVE_TOD_TO_TB_REG(@0x17)[00]=b'1'(move TOD to Timebase). The TOD transfers the TOD value to the Timebase after a SYNC boundary occurred. Note that TOD_TX_TTYPE_CTRL_REG(@0x27)[24:31] needs to be configured before issuing a TOD transfer to Timebase.The address of the PIB slave targeted by the TOD PIB master is configured as 0xNN0126a1 where NN is the configurable slave address specified in TOD_TX_TTYPE_CTRL_REG(@0x27)[24:31].
data.flush<0>();
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_UNIT_POS, coreTarget, l_core_id));
//0x20 is the "base" chiplet number for all the cores that's why we add it to the core id
l_core_id = l_core_id + 0x20;
data.insertFromRight(l_core_id, 0, 8);
//This will go the TOD_READ register (0x20010AA3) for the core that we are currently targeting
data.insertFromRight(0x010AA310000000, 8, 56);
FAPI_TRY(fapi2::putScom(*target, PERV_TOD_TX_TTYPE_CTRL_REG, data), "Could not write PERV_TOD_TX_TTYPE_CTRL_REG");
data.flush<0>();
data.setBit<0>();
FAPI_TRY(fapi2::putScom(*target, PERV_TOD_MOVE_TOD_TO_TB_REG, data), "Could not write TOD_MOVE_TOD_TO_TB_REG");
tod_init_pending_count = 0;
while(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT)
{
FAPI_TRY(fapi2::delay(P9_TOD_UTILS_HW_NS_DELAY, P9_TOD_UTILS_SIM_CYCLE_DELAY), "fapiDelay error");
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR register for polling");
data.extract(tfmr_state, TFMR_STATE_START_BIT, TFMR_STATE_NUM_BITS, 60);
if (tfmr_state == TFMR_STATE_TB_RUNNING)
{
FAPI_DBG("TFMR in TB_RUNNING state");
break;
}
++tod_init_pending_count;
}
FAPI_ASSERT(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT,
fapi2::P9_TOD_INIT_TIMEOUT().set_TARGET(target).set_COUNT(tod_init_pending_count),
"TFMR state machine did not go to TB_RUNNING in time!");
tod_init_pending_count = 0;
//Poll for TFMR bit(18) = b'0'. Hardware clears the bit when the operation is complete.
while(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT)
{
FAPI_TRY(fapi2::delay(P9_TOD_UTILS_HW_NS_DELAY, P9_TOD_UTILS_SIM_CYCLE_DELAY), "fapiDelay error");
FAPI_TRY(p9_tod_utils_get_tfmr_reg(coreTarget, i_thread_num, data), "Could not read TFMR");
if (!data.getBit<TFMR_MOVE_CHIP_TOD_TO_TB>())
{
FAPI_DBG("TFMR_MOVE_CHIP_TOD_TO_TB cleared.");
break;
}
++tod_init_pending_count;
}
FAPI_ASSERT(tod_init_pending_count < P9_TOD_UTIL_TIMEOUT_COUNT,
fapi2::P9_TOD_INIT_TIMEOUT().set_TARGET(target).set_COUNT(tod_init_pending_count),
"TFMR_MOVE_CHIP_TOD_TO_TB did not clear in time!");
}
// Finish configuring downstream nodes
for (std::list<tod_topology_node*>::const_iterator child = (i_tod_node->i_children).begin();
child != (i_tod_node->i_children).end();
++child)
{
tod_topology_node* tod_node = *child;
FAPI_TRY(p9_tod_move_tod_to_tb(tod_node, i_thread_num, i_failingTodProc), "Failure configuring downstream node!");
}
fapi_try_exit:
FAPI_DBG("Exiting...");
return fapi2::current_err;
}
} // extern "C"