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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/hwpf/hwp/pstates/pstates/proc_get_voltage.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* COPYRIGHT International Business Machines Corp. 2013 */
/* */
/* p1 */
/* */
/* Object Code Only (OCO) source materials */
/* Licensed Internal Code Source Materials */
/* IBM HostBoot Licensed Internal Code */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* Origin: 30 */
/* */
/* IBM_PROLOG_END_TAG */
// $Id: proc_get_voltage.C,v 1.6 2013/12/04 18:54:49 jimyac Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ipl/fapi/proc_get_voltage.C,v $
//------------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2012
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//------------------------------------------------------------------------------
// *! TITLE : proc_get_voltage.C
// *! DESCRIPTION : Get VDD & VCS vid codes for given Frequency (FAPI)
// *!
// *! OWNER NAME : Jim Yacynych Email: jimyac@us.ibm.com
// *! BACKUP NAME :
// *!
// *! ADDITIONAL COMMENTS :
// *! Procedure Prereq:
// *! - System clocks are running
// *!
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Version Date Owner Description
//------------------------------------------------------------------------------
// 1.2 11/07/13 RAS review changes
// 1.1 mm/dd/yy jimyac Initial release
//------------------------------------------------------------------------------
// ----------------------------------------------------------------------
// Includes
// ----------------------------------------------------------------------
#include <fapi.H>
#include <pstate_tables.h>
#include <lab_pstates.h>
#include <pstates.h>
#include <proc_get_voltage.H>
extern "C" {
using namespace fapi;
// ----------------------------------------------------------------------
// Function prototypes
// ----------------------------------------------------------------------
// ----------------------------------------------------------------------
// Function definitions
// ----------------------------------------------------------------------
/// \param[in] i_target Chip Target
/// \param[in] i_freq_mhz frequency in Mhz
/// \param[out] *o_vdd_vid vdd vid value
/// \param[out] *o_vcs_vid vcs vid value
/// \retval FAPI_RC_SUCCESS
/// \retval ERROR defined in xml
ReturnCode proc_get_voltage(const Target& i_target,
const uint32_t i_freq_mhz,
uint8_t& o_vdd_vid,
uint8_t& o_vcs_vid)
{
fapi::ReturnCode l_rc;
int l_result = 0;
PstateSuperStructure l_pss;
gpst_entry_t l_entry;
Pstate l_freq_pstate = 0;
Pstate l_pmax = 0;
uint8_t l_freq_pstate_index = 0;
// -----------------------------
// create pstate super structure
// -----------------------------
do
{
FAPI_IMP("Executing p8_build_pstate_datablock to create Pstate Superstructure");
FAPI_EXEC_HWP(l_rc, p8_build_pstate_datablock, i_target, &l_pss);
if (!l_rc.ok())
{
FAPI_ERR("Error calling p8_build_pstate_datablock");
break;
}
// ----------------------
// convert freq to pstate
// ----------------------
FAPI_INF("Look up Pstate for given frequency (%u Mhz) in Global Pstate Table in Pstate Superstructure", i_freq_mhz);
l_result = freq2pState(&(l_pss.gpst), (i_freq_mhz*1000), &l_freq_pstate);
if (l_result)
{
const uint32_t & FREQ_MHZ = i_freq_mhz;
int & FREQ2PSTATE_RC = l_result;
FAPI_ERR("**** ERROR : Pstate for given frequency (%u Mhz) is out of bounds of Pstate Values : max = %d min = %d", i_freq_mhz, PSTATE_MAX, PSTATE_MIN);
FAPI_SET_HWP_ERROR(l_rc, RC_PROCPM_GET_VOLTAGE_FREQ2PSTATE_ERROR);
break;
}
// ----------------------
// pstate bounds checking
// ----------------------
l_pmax = l_pss.gpst.pmin + l_pss.gpst.entries - 1;
FAPI_INF("l_freq_pstate = %d l_pmax = %d pmin = %d entries = %d i_freq_mhz = %d\n", l_freq_pstate, l_pmax, l_pss.gpst.pmin, l_pss.gpst.entries, i_freq_mhz);
if (l_freq_pstate > l_pmax)
{
int8_t & FREQ_PSTATE = l_freq_pstate;
int8_t & PMAX = l_pmax;
int8_t & PMIN = l_pss.gpst.pmin;
uint8_t & ENTRIES = l_pss.gpst.entries;
FAPI_ERR("**** ERROR : Pstate (%d) for given frequency is greater than l_pmax (%d)", l_freq_pstate, l_pmax);
FAPI_SET_HWP_ERROR(l_rc, RC_PROCPM_GET_VOLTAGE_FREQ_PSTATE_GT_PMAX_ERROR);
break;
}
// clip l_freq_pstate to pmin if it is lower than pmin
if (l_freq_pstate < l_pss.gpst.pmin)
{
FAPI_INF("Pstate for given frequency is less than pmin, so clipping it to pmin");
l_freq_pstate = l_pss.gpst.pmin;
}
// --------------------------------------------------------
// convert pstate to pstate table index and lookup voltages
// --------------------------------------------------------
l_freq_pstate_index = l_freq_pstate - l_pss.gpst.pmin;
l_entry.value = revle64(l_pss.gpst.pstate[l_freq_pstate_index].value);
o_vdd_vid = l_entry.fields.evid_vdd;
o_vcs_vid = l_entry.fields.evid_vcs;
FAPI_INF("vid codes for pstate %d : vdd = 0x%02x vcs = 0x%02x", l_freq_pstate, o_vdd_vid, o_vcs_vid);
} while(0);
return l_rc;
}
} //end extern C
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