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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/hwpf/hwp/slave_sbe/proc_cen_ref_clk_enable/proc_cen_ref_clk_enable.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2013,2014 */
/* */
/* 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 */
// $Id: proc_cen_ref_clk_enable.C,v 1.4 2014/04/14 18:57:01 jmcgill Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ipl/fapi/proc_cen_ref_clk_enable.C,v $
//------------------------------------------------------------------------------
// *|
// *! (C) Copyright International Business Machines Corp. 2012
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
// *|
// *! TITLE : proc_cen_ref_clk_enable.C
// *! DESCRIPTION : Enable Centaur reference clocks (FAPI)
// *!
// *! OWNER NAME : Benedikt Geukes Email: benedikt.geukes@de.ibm.com
// *! BACKUP NAME : Ralph Koester Email: rkoester@de.ibm.com
// *!
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include "proc_check_master_sbe_seeprom.H"
#include "proc_cen_ref_clk_enable.H"
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
extern "C"
{
//------------------------------------------------------------------------------
// Hardware Procedure
//------------------------------------------------------------------------------
// parameters: i_target => chip target
// i_attached_centaurs => bitmask representing attached Centaur
// positions
// returns: FAPI_RC_SUCCESS if operation was successful, else error
//------------------------------------------------------------------------------
fapi::ReturnCode proc_cen_ref_clk_enable(const fapi::Target & i_target,
const uint8_t i_attached_centaurs)
{
ecmdDataBufferBase reg_data(32);
uint32_t rc_ecmd = 0;
fapi::ReturnCode rc;
bool is_master = false;
uint8_t configured_centaurs = 0x00;
std::vector<fapi::Target> mcs_targets;
do
{
// determine chip status (master/slave) to differentiate access path to FSI GP8 register
// master: SCOM
// slave: CFAM
rc = proc_check_master_sbe_seeprom(i_target, is_master);
if (!rc.ok())
{
FAPI_ERR("proc_cen_ref_clk_enable: Error from proc_check_master_sbe_seeprom");
break;
}
FAPI_INF("proc_cen_ref_clk_enable: Target %s is %s, attached Centaurs: 0x%02X",
i_target.toEcmdString(), (is_master)?("master"):("slave"), i_attached_centaurs);
// obtain set of functional MCS chiplets
rc = fapiGetChildChiplets(i_target,
fapi::TARGET_TYPE_MCS_CHIPLET,
mcs_targets,
fapi::TARGET_STATE_FUNCTIONAL);
if (!rc.ok())
{
FAPI_ERR("proc_cen_ref_clk_enable: Error from fapiGetChildChiplets");
break;
}
// loop through MCS chiplets, match with attached Centaurs
for (std::vector<fapi::Target>::iterator i = mcs_targets.begin();
(i != mcs_targets.end()) && !rc && !rc_ecmd;
i++)
{
uint8_t mcs_unit_id = 0x00;
uint8_t refclock_bit = 0x00;
rc = FAPI_ATTR_GET(ATTR_CHIP_UNIT_POS,
&(*i),
mcs_unit_id);
if (rc)
{
FAPI_ERR("proc_cen_ref_clk_enable: Error querying ATTR_CHIP_UNIT_POS");
break;
}
// continue to next iteration if this MCS is not connected to a Centaur
if (!(i_attached_centaurs & (1 << ((NUM_CENTAUR_POS-1)-mcs_unit_id))))
{
FAPI_DBG("proc_cen_ref_clk_enable: MCS %d is not connected to a Centaur, skipping...\n", mcs_unit_id);
}
else
{
// mark that we have configured this MCS/Centaur pair
configured_centaurs |= (1 << ((NUM_CENTAUR_POS-1)-mcs_unit_id));
FAPI_DBG("proc_cen_ref_clk_enable: MCS %d is connected to a Centaur, configured_centaurs: %02X\n", mcs_unit_id,configured_centaurs);
// query attribute which defines reflock bit associated with this Centaur
rc = FAPI_ATTR_GET(ATTR_DMI_REFCLOCK_SWIZZLE,
&(*i),
refclock_bit);
if (rc)
{
FAPI_ERR("proc_cen_ref_clk_enable: Error querying ATTR_DMI_REFCLOCK_SWIZZLE");
break;
}
FAPI_DBG("proc_cen_ref_clk_enable: refclock_bit: %02X\n", refclock_bit);
if ((FSI_GP8_CENTAUR_REFCLOCK_START_BIT + refclock_bit) > FSI_GP8_CENTAUR_REFCLOCK_END_BIT)
{
// bit offset exceeds field range
FAPI_ERR("proc_cen_ref_clk_enable: Translated Centaur refclock enable bit position is out of range!");
const fapi::Target& PROC_TARGET = i_target;
const uint8_t& CENTAUR_POSITION = mcs_unit_id;
const uint8_t& REFCLOCK_BIT = refclock_bit;
FAPI_SET_HWP_ERROR(rc,
RC_PROC_CEN_REF_CLK_ENABLE_SWIZZLE_ERR);
break;
}
rc_ecmd |= reg_data.setBit(FSI_GP8_CENTAUR_REFCLOCK_START_BIT+
refclock_bit);
}
}
if (rc)
{
break;
}
if (rc_ecmd)
{
FAPI_ERR("proc_cen_ref_clk_enable: Error (0x%x) setting up refclock enable OR data buffer",
rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
if (configured_centaurs != i_attached_centaurs)
{
FAPI_ERR("proc_cen_ref_clk_enable: Not all Centaurs marked as attached were configured");
const fapi::Target& PROC_TARGET = i_target;
const uint8_t& CONFIGURED_CENTAUR_POSITIONS = configured_centaurs;
const uint8_t& ATTACHED_CENTAUR_POSITIONS = i_attached_centaurs;
FAPI_SET_HWP_ERROR(rc,
RC_PROC_CEN_REF_CLK_ENABLE_CONFIG_ERR);
break;
}
FAPI_INF("proc_cen_ref_clk_enable: Enable refclk for functional Centaur chips...");
if (is_master)
{
ecmdDataBufferBase scom_data(64);
rc = fapiGetScom(i_target, MBOX_FSIGP8_0x00050017, scom_data);
if (rc)
{
FAPI_ERR("proc_cen_ref_clk_enable: fapiGetScom error (MBOX_FSIGP8_0x00050017)");
break;
}
rc_ecmd |= scom_data.setOr(reg_data.getWord(0), 0, 32);
if (rc_ecmd)
{
FAPI_ERR("proc_cen_ref_clk_enable: Error (0x%x) setting up FSI GP8 write data buffer (SCOM)",
rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
rc = fapiPutScom(i_target, MBOX_FSIGP8_0x00050017, scom_data);
if (rc)
{
FAPI_ERR("proc_cen_ref_clk_enable: fapiPutScom error (MBOX_FSIGP8_0x00050017)");
break;
}
}
else
{
ecmdDataBufferBase cfam_data(32);
rc = fapiGetCfamRegister(i_target, CFAM_FSI_GP8_0x00002817, cfam_data);
if (rc)
{
FAPI_ERR("proc_cen_ref_clk_enable: fapiGetCfamRegister error (CFAM_FSI_GP8_0x00001017)");
break;
}
rc_ecmd |= cfam_data.setOr(reg_data.getWord(0), 0, 32);
if (rc_ecmd)
{
FAPI_ERR("proc_cen_ref_clk_enable: Error (0x%x) setting up FSI GP8 write data buffer (CFAM)",
rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
rc = fapiPutCfamRegister(i_target, CFAM_FSI_GP8_0x00002817, cfam_data);
if (rc)
{
FAPI_ERR("proc_cen_ref_clk_enable: fapiPutCfamRegister error (CFAM_FSI_GP8_0x00001017)");
break;
}
}
} while(0); // end do
// mark function exit
FAPI_INF("proc_cen_ref_clk_enable: Exit");
return rc;
} // end FAPI procedure proc_cen_ref_clk_enable
} // extern "C"
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