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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/secureboot/node_comm/node_comm.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2018 */
/* [+] 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 node_comm.C
*
* @brief Implementation of the Secure Node Communications Functions
*
*/
// ----------------------------------------------
// Includes
// ----------------------------------------------
#include <string.h>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <errl/errludtarget.H>
#include <errl/errludlogregister.H>
#include <targeting/common/targetservice.H>
#include <devicefw/userif.H>
#include <devicefw/driverif.H>
#include <secureboot/secure_reasoncodes.H>
#include <secureboot/nodecommif.H>
#include <targeting/common/commontargeting.H>
#include <targeting/common/utilFilter.H>
#include "node_comm.H"
using namespace TARGETING;
namespace SECUREBOOT
{
namespace NODECOMM
{
/**
* @brief Map Attention Bits in FIR Register to specific Link Mailbox
*/
errlHndl_t nodeCommMapAttn(TARGETING::Target* i_pProc,
const node_comm_modes_t i_mode,
bool & o_attn_found,
uint64_t & o_linkId,
uint64_t & o_mboxId)
{
errlHndl_t err = nullptr;
uint64_t fir_data = 0x0;
uint64_t fir_data_with_mask = 0x0;
o_attn_found = false;
assert(i_mode < NCDD_MODE_INVALID,"nodeCommMapAttn: Invalid mode: %d",
i_mode);
const uint64_t fir_mask = (i_mode == NCDD_MODE_ABUS)
? NCDD_ABUS_FIR_ATTN_MASK
: NCDD_XBUS_FIR_ATTN_MASK;
const uint64_t fir_addr = (i_mode == NCDD_MODE_ABUS)
? NCDD_REG_FIR + NCDD_ABUS_REG_OFFSET
: NCDD_REG_FIR;
const size_t expSize = sizeof(fir_data);
TRACUCOMP(g_trac_nc,ENTER_MRK
"nodeCommMapAttn: tgt=0x%X, mode=%s, fir_addr=0x%.16llX",
get_huid(i_pProc),
(i_mode == NCDD_MODE_ABUS)
? NCDD_ABUS_STRING : NCDD_XBUS_STRING,
fir_addr);
do
{
// Read the FIR reg
auto reqSize = expSize;
err = DeviceFW::deviceRead(i_pProc,
&fir_data,
reqSize,
DEVICE_SCOM_ADDRESS(fir_addr));
if(err)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommMapAttn Read Fail! (%s): "
" tgt=0x%X, reg_addr=0x%.16llX, data=0x%.16llX "
TRACE_ERR_FMT,
(i_mode == NCDD_MODE_ABUS)
? NCDD_ABUS_STRING : NCDD_XBUS_STRING,
TARGETING::get_huid(i_pProc),
fir_addr, fir_data,
TRACE_ERR_ARGS(err));
break;
}
assert(reqSize==expSize,"nodeCommMapAttn: SCOM deviceRead didn't return expected data size of %d (it was %d)",
expSize,reqSize);
// Map Attention bits in the FIR
fir_data_with_mask = fir_data & fir_mask;
const int bit_count = __builtin_popcount(fir_data_with_mask);
TRACUCOMP(g_trac_nc,"nodeCommMapAttn: FIR data = 0x%.16llX, "
"mask=0x%.16llX, data+mask=0x%.16llX, count=%d",
fir_data, fir_mask, fir_data_with_mask, bit_count);
if (bit_count == 0)
{
TRACUCOMP(g_trac_nc,INFO_MRK"nodeCommMapAttn: no attentions found: "
"FIR data = 0x%.16llX, mask=0x%.16llX, data+mask=0x%.16llX",
fir_data, fir_mask, fir_data_with_mask);
break;
}
else if (bit_count > 1)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommMapAttn: "
"Too many attentions found (%d) in fir: data=0x%.16llX, "
"data+mask=0x%.16llX, fir_addr=0x%.16llX",
bit_count, fir_data, fir_data_with_mask, fir_addr);
/*@
* @errortype
* @reasoncode RC_NC_TOO_MANY_ATTNS_FOUND
* @moduleid MOD_NC_MAP_ATTN
* @userdata1 Raw FIR Data
* @userdata2[0:31] Number of Attentions found
* @userdata2[32:63] Target HUID FIR was read from
* @devdesc Too many attentions were found in
* the Node Comm FIR Register
* @custdesc Secure Boot failure
*/
err = new ERRORLOG::ErrlEntry( ERRORLOG::ERRL_SEV_UNRECOVERABLE,
MOD_NC_MAP_ATTN,
RC_NC_TOO_MANY_ATTNS_FOUND,
fir_data,
TWO_UINT32_TO_UINT64(
bit_count,
get_huid(i_pProc)));
// Likely HB code failed to do the procedure correctly
err->addProcedureCallout(HWAS::EPUB_PRC_HB_CODE,
HWAS::SRCI_PRIORITY_HIGH);
// Or unlikely an issue with Processor or its bus
err->addHwCallout( i_pProc,
HWAS::SRCI_PRIORITY_LOW,
HWAS::NO_DECONFIG,
HWAS::GARD_NULL );
// Collect FFDC
getNodeCommFFDC(i_mode, i_pProc, err);
err->collectTrace(SECURE_COMP_NAME);
err->collectTrace(NODECOMM_TRACE_NAME);
break;
}
int bit = 0;
const int possible_attn_bits = __builtin_popcount(fir_mask);
for ( ; bit < possible_attn_bits ; ++bit)
{
// Start at first bit and shift right to find an attention
if ( fir_data & (NCDD_START_OF_ATTN_BITS >> bit))
{
o_attn_found = true;
o_linkId = (bit / 2);
o_mboxId = (bit % 2);
TRACFCOMP(g_trac_nc,INFO_MRK"nodeCommMapAttn: tgt=0x%X: "
"o_attn_found=%d, o_linkId=%d, mboxId=%d, "
TRACE_ERR_FMT,
get_huid(i_pProc), o_attn_found, o_linkId, o_mboxId,
TRACE_ERR_ARGS(err));
break;
}
}
} while( 0 );
TRACUCOMP(g_trac_nc,EXIT_MRK"nodeCommMapAttn: tgt=0x%X: "
"o_attn_found=%d, o_linkId=%d, mboxId=%d, "
TRACE_ERR_FMT,
get_huid(i_pProc), o_attn_found, o_linkId, o_mboxId,
TRACE_ERR_ARGS(err));
return err;
} // end of nodeCommMapAttn
/**
* @brief Add FFDC for the target to an error log
*/
void getNodeCommFFDC( node_comm_modes_t i_mode,
TARGETING::Target* i_pProc,
errlHndl_t &io_log)
{
TRACFCOMP(g_trac_nc,ENTER_MRK
"getNodeCommFFDC: tgt=0x%X, mode=%s, err_plid=0x%X",
get_huid(i_pProc),
(i_mode == NCDD_MODE_ABUS)
? NCDD_ABUS_STRING : NCDD_XBUS_STRING,
ERRL_GETPLID_SAFE(io_log));
do
{
if (io_log == nullptr)
{
TRACFCOMP(g_trac_nc,INFO_MRK"getNodeCommFFDC: io_log==nullptr, so "
"no FFDC has been collected for tgt=0x%X, mode=%s",
get_huid(i_pProc),
(i_mode == NCDD_MODE_ABUS)
? NCDD_ABUS_STRING : NCDD_XBUS_STRING);
break;
}
// Add Target to log
ERRORLOG::ErrlUserDetailsTarget(i_pProc,"Proc Target").addToLog(io_log);
// Add HW regs
ERRORLOG::ErrlUserDetailsLogRegister ffdc(i_pProc);
// FIR/Control/Status/Data Registers
ffdc.addData(DEVICE_SCOM_ADDRESS(getLinkMboxRegAddr(NCDD_REG_FIR,i_mode)));
ffdc.addData(DEVICE_SCOM_ADDRESS(getLinkMboxRegAddr(NCDD_REG_CTRL,i_mode)));
ffdc.addData(DEVICE_SCOM_ADDRESS(getLinkMboxRegAddr(NCDD_REG_DATA,i_mode)));
// Loop Through All of the Mailbox Registers Where the Data Could End Up
uint64_t l_reg = 0;
const auto max_linkId = (i_mode==NCDD_MODE_ABUS)
? NCDD_MAX_ABUS_LINK_ID
: NCDD_MAX_XBUS_LINK_ID;
for (size_t linkId=0; linkId <= max_linkId ; ++linkId)
{
for (size_t mboxId=0; mboxId <= NCDD_MAX_MBOX_ID; ++mboxId)
{
l_reg = getLinkMboxReg(linkId, mboxId);
ffdc.addData(DEVICE_SCOM_ADDRESS(getLinkMboxRegAddr(l_reg,i_mode)));
}
}
ffdc.addToLog(io_log);
} while( 0 );
TRACFCOMP(g_trac_nc,EXIT_MRK"getNodeCommFFDC");
return;
} // end of getNodeCommFFDC
} // End NODECOMM namespace
} // End SECUREBOOT namespace
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