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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/scom/handleSpecialWakeup.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2020 */
/* [+] 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 */
#include <stdint.h>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <errl/errludtarget.H>
#include <trace/interface.H>
#include <targeting/common/commontargeting.H>
#include <targeting/common/targetservice.H>
#include <targeting/common/utilFilter.H>
#include <targeting/common/util.H>
#include <scom/scomreasoncodes.H>
#include <initservice/initserviceif.H>
#ifdef __HOSTBOOT_RUNTIME
#include <targeting/runtime/rt_targeting.H>
#include <runtime/interface.h>
#endif // __HOSTBOOT_RUNTIME
#include <fapi2/plat_hwp_invoker.H>
#include <p9_cpu_special_wakeup.H>
#include <scom/wakeup.H>
// Trace definition
extern trace_desc_t* g_trac_scom;
using namespace TARGETING;
using namespace SCOM;
namespace WAKEUP
{
/**
* @brief Check to see which type of wakeup we need to use
* @return true: Use Host wakeup interface;
* false: Use internal wakeup HWP
*/
bool useHypWakeup( void )
{
#ifdef __HOSTBOOT_RUNTIME
// FSP and BMC runtime use hostservice for wakeup, provided that
// we are using a level of opal-prd that supports it
// Always use the hyp call on FSP systems
if( INITSERVICE::spBaseServicesEnabled() )
{
return true;
}
// PHYP always supports it
else if( TARGETING::is_phyp_load() )
{
return true;
}
// On non-FSP + non-PHYP systems, explicitly check that the OPAL support
// is there
else if( (g_hostInterfaces != NULL) &&
(g_hostInterfaces->get_interface_capabilities != NULL) &&
(g_hostInterfaces->get_interface_capabilities(HBRT_CAPS_SET1_OPAL)
& HBRT_CAPS_OPAL_HAS_WAKEUP) &&
(g_hostInterfaces->wakeup != NULL) )
{
return true;
}
return false;
#else
// IPL time always uses our internal version
return false;
#endif
}
/**
* @brief Use the Host/Hyp interface to control special wakeup
* @param i_target Input target core/ex/eq/etc
* @param[in] i_enable - set or clear or clear all of the wakeups
*/
errlHndl_t callWakeupHyp(TARGETING::Target* i_target,
HandleOptions_t i_enable)
{
errlHndl_t l_errl = NULL;
#ifdef __HOSTBOOT_RUNTIME
TARGETING::TYPE l_type = i_target->getAttr<TARGETING::ATTR_TYPE>();
// Check for valid interface function
if( (g_hostInterfaces == NULL) ||
(g_hostInterfaces->wakeup == NULL) )
{
TRACFCOMP( g_trac_scom,ERR_MRK
"callWakeupHyp> Hypervisor wakeup interface not linked");
/*@
* @errortype
* @moduleid SCOM_CALL_WAKEUP_HYP
* @reasoncode SCOM_RUNTIME_INTERFACE_ERR
* @userdata1 Target HUID
* @userdata2 Wakeup Enable
* @devdesc Wakeup runtime interface not linked.
*/
l_errl = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_INFORMATIONAL,
SCOM_CALL_WAKEUP_HYP,
SCOM_RUNTIME_INTERFACE_ERR,
get_huid(i_target),
i_enable);
l_errl->addProcedureCallout(HWAS::EPUB_PRC_HB_CODE,
HWAS::SRCI_PRIORITY_HIGH);
return l_errl;
}
TargetHandleList pCoreList;
// If the target is already a core just push it on the list
if(l_type == TARGETING::TYPE_CORE)
{
pCoreList.clear();
pCoreList.push_back(i_target);
}
else
{
getChildChiplets( pCoreList, i_target, TARGETING::TYPE_CORE );
}
// Call wakeup on all core targets
// Wakeup may be called twice for fused cores
for ( auto pCore_it = pCoreList.begin();
pCore_it != pCoreList.end();
++pCore_it )
{
// Runtime target id
TARGETING::rtChipId_t rtTargetId = 0;
l_errl = TARGETING::getRtTarget(*pCore_it, rtTargetId);
if(l_errl)
{
break;
}
uint32_t mode;
if(i_enable == WAKEUP::ENABLE)
{
mode = HBRT_WKUP_FORCE_AWAKE;
}
else if(i_enable == WAKEUP::DISABLE)
{
mode = HBRT_WKUP_CLEAR_FORCE;
}
else if(i_enable == WAKEUP::FORCE_DISABLE)
{
mode = HBRT_WKUP_CLEAR_FORCE_COMPLETELY;
}
else
{
/*@
* @errortype
* @moduleid SCOM_HANDLE_SPECIAL_WAKEUP
* @reasoncode SCOM_INVALID_WAKEUP_PARM
* @userdata1 Wakeup Argument
* @userdata2 Input Target
* @devdesc Invalid mode parm for wakeup operation.
*/
l_errl = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_INFORMATIONAL,
SCOM_HANDLE_SPECIAL_WAKEUP,
SCOM_INVALID_WAKEUP_PARM,
i_enable,
TARGETING::get_huid(i_target),
ERRORLOG::ErrlEntry::ADD_SW_CALLOUT );
break;
}
// PHYP supports the complete clear but OPAL might not yet
if( (mode == HBRT_WKUP_CLEAR_FORCE_COMPLETELY)
&& !TARGETING::is_phyp_load()
&& !(g_hostInterfaces->
get_interface_capabilities(HBRT_CAPS_SET1_OPAL)
& HBRT_CAPS_OPAL_HAS_WAKEUP_CLEAR) )
{
TRACFCOMP( g_trac_scom, "No support for forced clear, skipping" );
break;
}
// Do the special wakeup
int l_rc = g_hostInterfaces->wakeup(rtTargetId,mode);
// Check for the specific case where PHYP has detected a core
// checkstop and will fail no matter what
if( HBRT_RC_WAKEUP_INVALID_ON_CORE_XSTOP == l_rc )
{
TRACFCOMP( g_trac_scom,ERR_MRK
"callWakeupHyp> Wakeup on %.8X failed due to core checkstop",
TARGETING::get_huid(i_target) );
}
// Any other failure is valid
else if(l_rc)
{
TRACFCOMP( g_trac_scom,ERR_MRK
"callWakeupHyp> Hypervisor wakeup failed. "
"rc 0x%X target_huid 0x%llX rt_target_id 0x%llX mode %d",
l_rc, get_huid(*pCore_it), rtTargetId, mode );
// convert rc to error log
/*@
* @errortype
* @moduleid SCOM_CALL_WAKEUP_HYP
* @reasoncode SCOM_RUNTIME_WAKEUP_ERR
* @userdata1 Hypervisor return code
* @userdata2[0:31] Runtime Target ID
* @userdata2[32:63] Wakeup Mode
* @devdesc Hypervisor wakeup failed.
*/
l_errl = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_INFORMATIONAL,
SCOM_CALL_WAKEUP_HYP,
SCOM_RUNTIME_WAKEUP_ERR,
l_rc,
TWO_UINT32_TO_UINT64(
rtTargetId, mode));
l_errl->addHwCallout(i_target,
HWAS::SRCI_PRIORITY_LOW,
HWAS::NO_DECONFIG,
HWAS::GARD_NULL);
break;
}
}
#else
assert( false, "Cannot use host wakeup in IPL code!!" );
#endif
return l_errl;
}
/**
* @brief Call the wakeup HWP to control special wakeup
* @param i_target Input target core/ex/eq/etc
* @param[in] i_enable - set or clear or clear all of the wakeups
*/
errlHndl_t callWakeupHwp(TARGETING::Target* i_target,
HandleOptions_t i_enable)
{
errlHndl_t l_errl = NULL;
fapi2::ReturnCode l_rc;
TARGETING::TYPE l_type = i_target->getAttr<TARGETING::ATTR_TYPE>();
if(l_type == TARGETING::TYPE_PROC)
{
// Call wakeup on all core targets
TargetHandleList pCoreList;
getChildChiplets( pCoreList, i_target, TARGETING::TYPE_CORE );
for ( auto pCore_it = pCoreList.begin();
pCore_it != pCoreList.end();
++pCore_it )
{
// To simplify, just call recursively with the core target
l_errl = callWakeupHwp(*pCore_it, i_enable);
if(l_errl)
{
break;
}
}
return l_errl;
}
// Need to handle multiple calls to enable special wakeup
// Count attribute will keep track and disable when zero
// Assume HBRT is single-threaded, so no issues with concurrency
uint32_t l_count = (i_target)->getAttr<ATTR_SPCWKUP_COUNT>();
if((l_count==0) && (i_enable==WAKEUP::DISABLE))
{
TRACFCOMP( g_trac_scom,ERR_MRK
"callWakeupHwp> Disabling special wakeup on target with SPCWKUP_COUNT=0");
/*@
* @errortype
* @moduleid SCOM_CALL_WAKEUP_HWP
* @reasoncode SCOM_SPCWKUP_COUNT_ERR
* @userdata1 Target HUID
* @userdata2[0:31] Wakeup Enable
* @userdata2[32:63] Wakeup Count (ATTR_SPCWKUP_COUNT)
* @devdesc Disabling special wakeup when not enabled.
*/
l_errl = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_INFORMATIONAL,
SCOM_CALL_WAKEUP_HWP,
SCOM_SPCWKUP_COUNT_ERR,
get_huid(i_target),
TWO_UINT32_TO_UINT64(
i_enable, l_count),
ERRORLOG::ErrlEntry::ADD_SW_CALLOUT);
errlCommit( l_errl, RUNTIME_COMP_ID );
}
if( (l_count>0) && (i_enable==WAKEUP::FORCE_DISABLE) )
{
TRACFCOMP( g_trac_scom,ERR_MRK
"Attempting to force disable special wakeup on %.8X with SPCWKUP_COUNT=%d",
TARGETING::get_huid(i_target), l_count);
/*@
* @errortype
* @moduleid SCOM_CALL_WAKEUP_HWP
* @reasoncode SCOM_UNEXPECTED_FORCE_WAKEUP
* @userdata1 Target HUID
* @userdata2[0:31] Wakeup Enable
* @userdata2[32:63] Wakeup Count (ATTR_SPCWKUP_COUNT)
* @devdesc Unexpectedly forcing wakeup off when the counter
* is non-zero, implies a bug in the code flow.
*/
l_errl = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_INFORMATIONAL,
SCOM_CALL_WAKEUP_HWP,
SCOM_UNEXPECTED_FORCE_WAKEUP,
get_huid(i_target),
TWO_UINT32_TO_UINT64(
i_enable, l_count),
ERRORLOG::ErrlEntry::ADD_SW_CALLOUT );
errlCommit( l_errl, RUNTIME_COMP_ID );
}
// Only call the HWP if 0-->1 or 1-->0 or if it is a force
if( ((l_count==0) && (i_enable==WAKEUP::ENABLE)) ||
((l_count==1) && (i_enable==WAKEUP::DISABLE)) ||
((l_count>1) && (i_enable==WAKEUP::FORCE_DISABLE)) )
{
// NOTE Regarding the entity type passed to the HWP:
// There are 3 independent registers used to trigger a
// special wakeup (FSP,HOST,OCC), we are using the FSP
// bit because HOST/OCC are already in use.
p9specialWakeup::PROC_SPCWKUP_OPS l_spcwkupType;
p9specialWakeup::PROC_SPCWKUP_ENTITY l_spcwkupSrc;
if(! INITSERVICE::spBaseServicesEnabled())
{
l_spcwkupSrc = p9specialWakeup::FSP;
}
else
{
l_spcwkupSrc = p9specialWakeup::HOST;
}
if(i_enable==WAKEUP::ENABLE)
{
l_spcwkupType = p9specialWakeup::SPCWKUP_ENABLE;
}
else // DISABLE or FORCE_DISABLE
{
l_spcwkupType = p9specialWakeup::SPCWKUP_DISABLE;
}
if(l_type == TARGETING::TYPE_EQ)
{
fapi2::Target<fapi2::TARGET_TYPE_EQ>
l_fapi_target(const_cast<TARGETING::Target*>(i_target));
FAPI_EXEC_HWP(l_rc,
p9_cpu_special_wakeup_eq,
l_fapi_target,
l_spcwkupType,
l_spcwkupSrc );
l_errl = rcToErrl(l_rc, ERRORLOG::ERRL_SEV_UNRECOVERABLE);
}
else if(l_type == TARGETING::TYPE_EX)
{
fapi2::Target<fapi2::TARGET_TYPE_EX_CHIPLET>
l_fapi_target(const_cast<TARGETING::Target*>(i_target));
FAPI_EXEC_HWP(l_rc,
p9_cpu_special_wakeup_ex,
l_fapi_target,
l_spcwkupType,
l_spcwkupSrc );
l_errl = rcToErrl(l_rc, ERRORLOG::ERRL_SEV_UNRECOVERABLE);
}
else if(l_type == TARGETING::TYPE_CORE)
{
fapi2::Target<fapi2::TARGET_TYPE_CORE>
l_fapi_target(const_cast<TARGETING::Target*>(i_target));
FAPI_EXEC_HWP(l_rc,
p9_cpu_special_wakeup_core,
l_fapi_target,
l_spcwkupType,
l_spcwkupSrc );
l_errl = rcToErrl(l_rc, ERRORLOG::ERRL_SEV_UNRECOVERABLE);
}
if(l_errl)
{
TRACFCOMP( g_trac_scom,
"callWakeupHwp> p9_cpu_special_wakeup ERROR :"
" Returning errorlog, reason=0x%x",
l_errl->reasonCode() );
// Capture the target data in the elog
ERRORLOG::ErrlUserDetailsTarget(i_target).addToLog( l_errl );
}
}
// Update the counter
if(!l_errl)
{
if(i_enable == WAKEUP::ENABLE)
{
l_count++;
}
else if(i_enable == WAKEUP::DISABLE)
{
l_count--;
}
else if(i_enable == WAKEUP::FORCE_DISABLE)
{
l_count = 0;
}
i_target->setAttr<ATTR_SPCWKUP_COUNT>(l_count);
}
return l_errl;
}
/**
* @brief Enable and disable special wakeup for SCOM operations
*/
errlHndl_t handleSpecialWakeup(TARGETING::Target* i_target,
HandleOptions_t i_enable)
{
errlHndl_t l_errl = NULL;
static bool l_useHypWakeup = useHypWakeup();
if( l_useHypWakeup )
{
l_errl = callWakeupHyp( i_target, i_enable );
}
else
{
l_errl = callWakeupHwp( i_target, i_enable );
}
return l_errl;
}
}
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