blob: 566b2f7918e90bc5ec34a44daf28f2612d13bbe5 [file] [log] [blame]
extern "C"
{
#include <libpdbg.h>
#include <libpdbg_sbe.h>
}
#include <analyzer/analyzer_main.hpp>
#include <attn/attention.hpp>
#include <attn/attn_common.hpp>
#include <attn/attn_config.hpp>
#include <attn/attn_dbus.hpp>
#include <attn/attn_handler.hpp>
#include <attn/attn_logging.hpp>
#include <attn/bp_handler.hpp>
#include <attn/ti_handler.hpp>
#include <attn/vital_handler.hpp>
#include <util/dbus.hpp>
#include <algorithm>
#include <iomanip>
#include <map>
#include <sstream>
#include <vector>
namespace attn
{
/**
* @brief Handle checkstop attention
*
* @param i_attention Attention object
* @return 0 indicates that the checkstop attention was successfully handled
* 1 indicates that the checkstop attention was NOT successfully
* handled.
*/
int handleCheckstop(Attention* i_attention);
/**
* @brief Handle special attention
*
* @param i_attention Attention object
* @return 0 indicates that the special attention was successfully handled
* 1 indicates that the special attention was NOT successfully handled
*/
int handleSpecial(Attention* i_attention);
/** @brief Determine if attention is active and not masked */
bool activeAttn(uint32_t i_val, uint32_t i_mask, uint32_t i_attn);
/**
* @brief The main attention handler logic
*
* @param i_breakpoints true = breakpoint special attn handling enabled
*/
void attnHandler(Config* i_config)
{
// Vector of active attentions to be handled
std::vector<Attention> active_attentions;
uint32_t isr_val, isr_mask;
// loop through processors looking for active attentions
trace<level::INFO>("Attention handler started");
pdbg_target* target;
pdbg_for_each_class_target("proc", target)
{
if (PDBG_TARGET_ENABLED == pdbg_target_probe(target))
{
auto proc = pdbg_target_index(target); // get processor number
// Use PIB target to determine if a processor is enabled
char path[16];
sprintf(path, "/proc%d/pib", proc);
pdbg_target* pibTarget = pdbg_target_from_path(nullptr, path);
// sanity check
if (nullptr == pibTarget)
{
trace<level::INFO>("pib path or target not found");
continue;
}
// check if pib target is enabled
if (PDBG_TARGET_ENABLED == pdbg_target_probe(pibTarget))
{
// The processor FSI target is required for CFAM read
sprintf(path, "/proc%d/fsi", proc);
pdbg_target* fsiTarget = pdbg_target_from_path(nullptr, path);
// sanity check
if (nullptr == fsiTarget)
{
trace<level::INFO>("fsi path or target not found");
continue;
}
// trace the proc number
std::string traceMsg = "proc: " + std::to_string(proc);
trace<level::INFO>(traceMsg.c_str());
isr_val = 0xffffffff; // invalid isr value
// get active attentions on processor
if (RC_SUCCESS != fsi_read(fsiTarget, 0x1007, &isr_val))
{
// log cfam read error
trace<level::INFO>("Error! cfam read 0x1007 FAILED");
eventAttentionFail((int)AttnSection::attnHandler |
ATTN_PDBG_CFAM);
}
else if (0xffffffff == isr_val)
{
trace<level::INFO>("Error! cfam read 0x1007 INVALID");
continue;
}
else
{
// trace isr value
std::stringstream ssIsr;
ssIsr << "cfam 0x1007 = 0x" << std::setw(8)
<< std::setfill('0') << std::hex << isr_val;
std::string strobjIsr = ssIsr.str();
trace<level::INFO>(strobjIsr.c_str());
isr_mask = 0xffffffff; // invalid isr mask
// get interrupt enabled special attentions mask
if (RC_SUCCESS != fsi_read(fsiTarget, 0x100d, &isr_mask))
{
// log cfam read error
trace<level::INFO>("Error! cfam read 0x100d FAILED");
eventAttentionFail((int)AttnSection::attnHandler |
ATTN_PDBG_CFAM);
}
else if (0xffffffff == isr_mask)
{
trace<level::INFO>("Error! cfam read 0x100d INVALID");
continue;
}
else
{
// trace true mask
std::stringstream ssMask;
ssMask << "cfam 0x100d = 0x" << std::setw(8)
<< std::setfill('0') << std::hex << isr_mask;
std::string strobjMask = ssMask.str();
trace<level::INFO>(strobjMask.c_str());
// SBE vital attention active and not masked?
if (true == activeAttn(isr_val, isr_mask, SBE_ATTN))
{
active_attentions.emplace_back(Attention::Vital,
handleVital, target,
i_config);
}
// Checkstop attention active and not masked?
if (true ==
activeAttn(isr_val, isr_mask, CHECKSTOP_ATTN))
{
active_attentions.emplace_back(Attention::Checkstop,
handleCheckstop,
target, i_config);
}
// Special attention active and not masked?
if (true == activeAttn(isr_val, isr_mask, SPECIAL_ATTN))
{
active_attentions.emplace_back(Attention::Special,
handleSpecial,
target, i_config);
}
} // cfam 0x100d valid
} // cfam 0x1007 valid
} // fsi target enabled
} // pib target enabled
} // next processor
// convert to heap, highest priority is at front
if (!std::is_heap(active_attentions.begin(), active_attentions.end()))
{
std::make_heap(active_attentions.begin(), active_attentions.end());
}
// call the attention handler until one is handled or all were attempted
while (false == active_attentions.empty())
{
// handle highest priority attention, done if successful
if (RC_SUCCESS == active_attentions.front().handle())
{
// an attention was handled so we are done
break;
}
// move attention to back of vector
std::pop_heap(active_attentions.begin(), active_attentions.end());
// remove attention from vector
active_attentions.pop_back();
}
}
/**
* @brief Handle checkstop attention
*
* @param i_attention Attention object
* @return 0 indicates that the checkstop attention was successfully handled
* 1 indicates that the checkstop attention was NOT successfully
* handled.
*/
int handleCheckstop(Attention* i_attention)
{
int rc = RC_SUCCESS; // assume checkstop handled
trace<level::INFO>("checkstop handler started");
// capture some additional data for logs/traces
addHbStatusRegs();
// if checkstop handling enabled, handle checkstop attention
if (false == (i_attention->getConfig()->getFlag(enCheckstop)))
{
trace<level::INFO>("Checkstop handling disabled");
}
else
{
// Look for any attentions found in hardware. This will generate and
// commit a PEL if any errors are found.
DumpParameters dumpParameters;
if (true != analyzer::analyzeHardware(dumpParameters))
{
rc = RC_ANALYZER_ERROR;
}
else
{
requestDump(dumpParameters);
util::dbus::transitionHost(util::dbus::HostState::Quiesce);
}
}
return rc;
}
/**
* @brief Handle special attention
*
* @param i_attention Attention object
* @return 0 indicates that the special attention was successfully handled
* 1 indicates that the special attention was NOT successfully handled
*/
int handleSpecial(Attention* i_attention)
{
int rc = RC_SUCCESS; // assume special attention handled
// The TI info chipop will give us a pointer to the TI info data
uint8_t* tiInfo = nullptr; // ptr to TI info data
uint32_t tiInfoLen = 0; // length of TI info data
pdbg_target* attnProc = i_attention->getTarget(); // proc with attention
bool tiInfoStatic = false; // assume TI info was provided (not created)
if (attnProc != nullptr)
{
// The processor PIB target is required for get TI info chipop
char path[16];
sprintf(path, "/proc%d/pib", pdbg_target_index(attnProc));
pdbg_target* tiInfoTarget = pdbg_target_from_path(nullptr, path);
if (nullptr != tiInfoTarget)
{
if (PDBG_TARGET_ENABLED == pdbg_target_probe(tiInfoTarget))
{
sbe_mpipl_get_ti_info(tiInfoTarget, &tiInfo, &tiInfoLen);
// If TI info not available use default based on host state
if (nullptr == tiInfo)
{
trace<level::INFO>("TI info data ptr is invalid");
util::dbus::HostRunningState runningState =
util::dbus::hostRunningState();
std::string stateString = "host state unknown";
if ((util::dbus::HostRunningState::Started ==
runningState) ||
(util::dbus::HostRunningState::Unknown == runningState))
{
if (util::dbus::HostRunningState::Started ==
runningState)
{
stateString = "host started";
}
tiInfo = (uint8_t*)defaultPhypTiInfo;
}
else
{
stateString = "host not started";
tiInfo = (uint8_t*)defaultHbTiInfo;
}
// trace host state
trace<level::INFO>(stateString.c_str());
tiInfoStatic = true; // using our TI info
}
}
}
}
bool tiInfoValid = false; // TI area data not valid or not available
// If TI area exists and is marked valid we can assume TI occurred
if ((nullptr != tiInfo) && (0 != tiInfo[0]))
{
TiDataArea* tiDataArea = (TiDataArea*)tiInfo;
std::stringstream ss; // string stream object for tracing
std::string strobj; // string object for tracing
// trace a few known TI data area values
ss.str(std::string()); // empty the stream
ss.clear(); // clear the stream
ss << "TI data command = 0x" << std::setw(2) << std::setfill('0')
<< std::hex << (int)tiDataArea->command;
strobj = ss.str();
trace<level::INFO>(strobj.c_str());
// Another check for valid TI Info since it has been seen that
// tiInfo[0] != 0 but TI info is not valid
if (0xa1 == tiDataArea->command)
{
tiInfoValid = true;
// trace some more data since TI info appears valid
ss.str(std::string()); // empty the stream
ss.clear(); // clear the stream
ss << "TI data term-type = 0x" << std::setw(2) << std::setfill('0')
<< std::hex << (int)tiDataArea->hbTerminateType;
strobj = ss.str();
trace<level::INFO>(strobj.c_str());
ss.str(std::string()); // empty the stream
ss.clear(); // clear the stream
ss << "TI data SRC format = 0x" << std::setw(2) << std::setfill('0')
<< std::hex << (int)tiDataArea->srcFormat;
strobj = ss.str();
trace<level::INFO>(strobj.c_str());
ss.str(std::string()); // empty the stream
ss.clear(); // clear the stream
ss << "TI data source = 0x" << std::setw(2) << std::setfill('0')
<< std::hex << (int)tiDataArea->source;
strobj = ss.str();
trace<level::INFO>(strobj.c_str());
if (true == (i_attention->getConfig()->getFlag(enTerminate)))
{
// Call TI special attention handler
rc = tiHandler(tiDataArea);
}
}
}
// TI area is available but was not valid data
if (false == tiInfoValid)
{
trace<level::INFO>("TI info NOT valid");
// if configured to handle TI as default special attention
if (i_attention->getConfig()->getFlag(dfltTi))
{
// TI handling may be disabled
if (true == (i_attention->getConfig()->getFlag(enTerminate)))
{
// Call TI special attention handler
rc = tiHandler(nullptr);
}
}
// breakpoint is default special attention when TI info NOT valid
else
{
// breakpoint handling may be disabled
if (true == (i_attention->getConfig()->getFlag(enBreakpoints)))
{
// Call the breakpoint special attention handler
rc = bpHandler();
}
}
}
// release TI data buffer
if ((nullptr != tiInfo) && (false == tiInfoStatic))
{
free(tiInfo);
}
if (RC_SUCCESS != rc)
{
trace<level::INFO>("Special attn not handled");
}
return rc;
}
/**
* @brief Determine if attention is active and not masked
*
* Determine whether an attention needs to be handled and trace details of
* attention type and whether it is masked or not.
*
* @param i_val attention status register
* @param i_mask attention true mask register
* @param i_attn attention type
* @param i_proc processor associated with registers
*
* @return true if attention is active and not masked, otherwise false
*/
bool activeAttn(uint32_t i_val, uint32_t i_mask, uint32_t i_attn)
{
bool rc = false; // assume attn masked and/or inactive
// if attention active
if (0 != (i_val & i_attn))
{
std::stringstream ss;
bool validAttn = true; // known attention type
switch (i_attn)
{
case SBE_ATTN:
ss << "SBE attn";
break;
case CHECKSTOP_ATTN:
ss << "Checkstop attn";
break;
case SPECIAL_ATTN:
ss << "Special attn";
break;
default:
ss << "Unknown attn";
validAttn = false;
}
// see if attention is masked
if (true == validAttn)
{
if (0 != (i_mask & i_attn))
{
rc = true; // attention active and not masked
}
else
{
ss << " masked";
}
}
std::string strobj = ss.str(); // ss.str() is temporary
trace<level::INFO>(strobj.c_str()); // commit trace stream
}
return rc;
}
} // namespace attn