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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/vpd/dimmPres.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2014 */
/* [+] Google Inc. */
/* [+] 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 dimmPres.C
*
* @brief Implementation of the DIMM Presence detect.
*
*/
// ----------------------------------------------
// Includes
// ----------------------------------------------
#include <trace/interface.H>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <targeting/common/targetservice.H>
#include <targeting/common/utilFilter.H>
#include <devicefw/driverif.H>
#include <vpd/vpdreasoncodes.H>
#include <vpd/spdenums.H>
#include <config.h>
#include "spd.H"
// ----------------------------------------------
// Globals
// ----------------------------------------------
// ----------------------------------------------
// Trace definitions
// ----------------------------------------------
extern trace_desc_t * g_trac_spd;
// ------------------------
// Macros for unit testing
//#define TRACUCOMP(args...) TRACFCOMP(args)
#define TRACUCOMP(args...)
//#define TRACSSCOMP(args...) TRACFCOMP(args)
#define TRACSSCOMP(args...)
// ----------------------------------------------
// Defines
// ----------------------------------------------
namespace SPD
{
// Register the Presence detect code with the framework.
DEVICE_REGISTER_ROUTE( DeviceFW::READ,
DeviceFW::PRESENT,
TARGETING::TYPE_DIMM,
dimmPresenceDetect );
// ------------------------------------------------------------------
// dimmPresenceDetect
// ------------------------------------------------------------------
errlHndl_t dimmPresenceDetect( DeviceFW::OperationType i_opType,
TARGETING::Target * i_target,
void * io_buffer,
size_t & io_buflen,
int64_t i_accessType,
va_list i_args )
{
errlHndl_t err = NULL;
bool present = false;
size_t presentSz = sizeof(present);
TRACSSCOMP( g_trac_spd,
ENTER_MRK"dimmPresenceDetect()" );
do
{
// Check to be sure that the buffer is big enough.
if( !(io_buflen >= sizeof(bool)) )
{
TRACFCOMP( g_trac_spd,
ERR_MRK"dimmPresenceDetect() - Invalid Data Length: %d",
io_buflen );
/*@
* @errortype
* @reasoncode VPD::VPD_INSUFFICIENT_BUFFER_SIZE
* @severity ERRORLOG::ERRL_SEV_UNRECOVERABLE
* @moduleid VPD::VPD_SPD_PRESENCE_DETECT
* @userdata1 Buffer Length
* @userdata2 <UNUSED>
* @devdesc Buffer for checking Presence Detect
* was not the correct size.
*/
err = new ERRORLOG::ErrlEntry( ERRORLOG::ERRL_SEV_UNRECOVERABLE,
VPD::VPD_SPD_PRESENCE_DETECT,
VPD::VPD_INSUFFICIENT_BUFFER_SIZE,
TO_UINT64(io_buflen),
0x0,
true /*Add HB Software Callout*/);
err->collectTrace( "SPD", 256);
break;
}
// Is the target present
#ifdef CONFIG_DJVPD_READ_FROM_HW
// Check if the parent MBA/MEMBUF is present. If it is not then
// no reason to check the DIMM which would otherwise generate
// tons of FSI errors. We can't just check if parent MBA
// is functional because DIMM presence detect is called before
// the parent MBA/MEMBUF is set as present/functional.
TARGETING::TargetHandleList membufList;
TARGETING::PredicateCTM membufPred( TARGETING::CLASS_CHIP,
TARGETING::TYPE_MEMBUF );
TARGETING::targetService().getAssociated(
membufList,
i_target,
TARGETING::TargetService::PARENT_BY_AFFINITY,
TARGETING::TargetService::ALL,
&membufPred);
bool parentPresent = false;
const TARGETING::TargetHandle_t membufTarget = *(membufList.begin());
err = deviceRead(membufTarget, &parentPresent, presentSz,
DEVICE_PRESENT_ADDRESS());
if (err)
{
TRACFCOMP(
g_trac_spd,
"Error reading parent MEMBUF present: huid 0x%X DIMM huid 0x%X",
TARGETING::get_huid(membufTarget),
TARGETING::get_huid(i_target) );
break;
}
if (!parentPresent)
{
present = false;
// Invalidate the SPD in PNOR
err = VPD::invalidatePnorCache(i_target);
if (err)
{
TRACFCOMP( g_trac_spd, "Error invalidating SPD in PNOR" );
}
break;
}
#endif
present = spdPresent( i_target );
if( present == false )
{
TRACUCOMP( g_trac_spd,
INFO_MRK"Dimm was found to be NOT present." );
}
else
{
TRACUCOMP( g_trac_spd,
INFO_MRK"Dimm was found to be present." );
}
#if defined(CONFIG_DJVPD_READ_FROM_HW) && defined(CONFIG_DJVPD_READ_FROM_PNOR)
if( present )
{
// Check if the VPD data in the PNOR matches the SEEPROM
err = VPD::ensureCacheIsInSync( i_target );
if( err )
{
present = false;
TRACFCOMP(g_trac_spd,ERR_MRK "dimmPresenceDetectt> Error during ensureCacheIsInSync (SPD)" );
break;
}
}
else
{
// SPD is not present, invalidate the SPD in PNOR
err = VPD::invalidatePnorCache(i_target);
if (err)
{
TRACFCOMP( g_trac_spd, "Error invalidating SPD in PNOR" );
}
}
#endif
// copy present value into output buffer so caller can read it
memcpy( io_buffer, &present, presentSz );
io_buflen = presentSz;
} while( 0 );
TRACSSCOMP( g_trac_spd,
EXIT_MRK"dimmPresenceDetect()" );
return err;
} // end dimmPresenceDetect
}; // end namespace SPD
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