attn/attn_handler.cpp - openbmc/openpower-hw-diags - Gitiles

 #include <libpdbg.h>

 #include <analyzer/analyzer_main.hpp>
 #include <attn/attention.hpp>
 #include <attn/attn_config.hpp>
 #include <attn/attn_handler.hpp>
 #include <attn/attn_logging.hpp>
 #include <attn/bp_handler.hpp>
 #include <attn/ti_handler.hpp>

 #include <algorithm>
 #include <iomanip>
 #include <map>
 #include <sstream>
 #include <vector>

 namespace attn
 {

 /**
  * @brief Handle SBE vital attention
  *
  * @param i_attention Attention object
  * @return 0 indicates that the vital attention was successfully handled
  *         1 indicates that the vital attention was NOT successfully handled
  */
 int handleVital(Attention* i_attention);

 /**
  * @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 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;
     uint32_t proc;

     // loop through processors looking for active attentions
     trace<level::INFO>("Attention handler started");

     pdbg_target* target;
     pdbg_for_each_class_target("fsi", target)
     {
         if (PDBG_TARGET_ENABLED == pdbg_target_probe(target))
         {
             proc = pdbg_target_index(target); // get processor number

             std::stringstream ss; // log message stream
             ss << "checking processor " << proc;
             trace<level::INFO>(ss.str().c_str());

             // get active attentions on processor
             if (RC_SUCCESS != fsi_read(target, 0x1007, &isr_val))
             {
                 // event
                 eventAttentionFail(RC_CFAM_ERROR);

                 // trace
                 trace<level::INFO>("Error! cfam read 0x1007 FAILED");
             }
             else
             {
                 std::stringstream ss; // log message stream
                 ss << "cfam 0x1007 = 0x";
                 ss << std::hex << std::setw(8) << std::setfill('0');
                 ss << isr_val;
                 trace<level::INFO>(ss.str().c_str());

                 // get interrupt enabled special attentions mask
                 if (RC_SUCCESS != fsi_read(target, 0x100d, &isr_mask))
                 {
                     // event
                     eventAttentionFail(RC_CFAM_ERROR);

                     // trace
                     trace<level::INFO>("Error! cfam read 0x100d FAILED");
                 }
                 else
                 {
                     // CFAM 0x100d is expected to have bits set corresponding
                     // to attentions that can generate an attention interrupt.
                     // We will trace this register value to help debug cases
                     // where the attention handler was invoked unexpectedly.

                     std::stringstream ss; // log message stream
                     ss << "cfam 0x100d = 0x";
                     ss << std::hex << std::setw(8) << std::setfill('0');
                     ss << isr_mask;
                     trace<level::INFO>(ss.str().c_str());

                     // bit 0 on "left": bit 30 = SBE vital attention
                     if (isr_val & 0x00000002)
                     {
                         active_attentions.emplace_back(
                             Attention::Vital, handleVital, target, i_config);
                     }

                     // bit 0 on "left": bit 1 = checkstop
                     if (isr_val & 0x40000000)
                     {
                         active_attentions.emplace_back(Attention::Checkstop,
                                                        handleCheckstop, target,
                                                        i_config);
                     }

                     // bit 0 on "left": bit 2 = special attention
                     if (isr_val & 0x20000000)
                     {
                         active_attentions.emplace_back(Attention::Special,
                                                        handleSpecial, target,
                                                        i_config);
                     }
                 } // cfam 0x100d valid
             }     // cfam 0x1007 valid
         }         // fsi 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 SBE vital attention
  *
  * @param i_attention Attention object
  * @return 0 indicates that the vital attention was successfully handled
  *         1 indicates that the vital attention was NOT successfully handled
  */
 int handleVital(Attention* i_attention)
 {
     int rc = RC_SUCCESS; // assume vital handled

     trace<level::INFO>("vital handler started");

     // if vital handling enabled, handle vital attention
     if (false == (i_attention->getConfig()->getFlag(enVital)))
     {
         trace<level::INFO>("vital handling disabled");
         rc = RC_NOT_HANDLED;
     }
     else
     {
         eventVital();
     }

     return rc;
 }

 /**
  * @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");

     // 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
         // comment a PEL if any errors are found.
         if (true != analyzer::analyzeHardware())
         {
             rc = RC_ANALYZER_ERROR;
         }
     }

     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 infor 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

     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))
             {
                 trace<level::INFO>("calling sbe_mpipl_get_ti_info");
                 sbe_mpipl_get_ti_info(tiInfoTarget, &tiInfo, &tiInfoLen);
                 if (tiInfo == nullptr)
                 {
                     trace<level::INFO>("TI info data ptr is null after call");
                 }
             }
         }
     }

     // Note: If we want to support running this application on architectures
     // of different endian-ness we need to handler that here. The TI data
     // will always be written in big-endian order.

     // If TI area exists and is marked valid we can assume TI occurred
     if ((nullptr != tiInfo) && (0 != tiInfo[0]))
     {
         trace<level::INFO>("TI info data present and valid");

         TiDataArea* tiDataArea = (TiDataArea*)tiInfo;

         // trace a few known TI data area values
         std::stringstream ss; // log message stream
         ss << "TI data command = " << tiDataArea->command;
         trace<level::INFO>(ss.str().c_str());
         ss << "TI data SRC format = " << tiDataArea->srcFormat;
         trace<level::INFO>(ss.str().c_str());
         ss << "TI data hb_terminate_type = " << tiDataArea->hbTerminateType;
         trace<level::INFO>(ss.str().c_str());

         if (true == (i_attention->getConfig()->getFlag(enTerminate)))
         {
             trace<level::INFO>("TI (terminate immediately)");

             // Call TI special attention handler
             rc = tiHandler(tiDataArea);
         }
     }
     // TI area not valid, assume breakpoint
     else
     {
         trace<level::INFO>("TI info NOT available, assume breakpoint");

         if (true == (i_attention->getConfig()->getFlag(enBreakpoints)))
         {
             trace<level::INFO>("breakpoint");

             // Call the breakpoint special attention handler
             bpHandler();
         }
     }

     // release TI data buffer
     if (nullptr != tiInfo)
     {
         free(tiInfo);
     }

     if (RC_SUCCESS != rc)
     {
         trace<level::INFO>("Special attn not handled");
     }

     return rc;
 }

 } // namespace attn
	#include <libpdbg.h>

	#include <analyzer/analyzer_main.hpp>
	#include <attn/attention.hpp>
	#include <attn/attn_config.hpp>
	#include <attn/attn_handler.hpp>
	#include <attn/attn_logging.hpp>
	#include <attn/bp_handler.hpp>
	#include <attn/ti_handler.hpp>

	#include <algorithm>
	#include <iomanip>
	#include <map>
	#include <sstream>
	#include <vector>

	namespace attn
	{

	/**
	* @brief Handle SBE vital attention
	*
	* @param i_attention Attention object
	* @return 0 indicates that the vital attention was successfully handled
	* 1 indicates that the vital attention was NOT successfully handled
	*/
	int handleVital(Attention* i_attention);

	/**
	* @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 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;
	uint32_t proc;

	// loop through processors looking for active attentions
	trace<level::INFO>("Attention handler started");

	pdbg_target* target;
	pdbg_for_each_class_target("fsi", target)
	{
	if (PDBG_TARGET_ENABLED == pdbg_target_probe(target))
	{
	proc = pdbg_target_index(target); // get processor number

	std::stringstream ss; // log message stream
	ss << "checking processor " << proc;
	trace<level::INFO>(ss.str().c_str());

	// get active attentions on processor
	if (RC_SUCCESS != fsi_read(target, 0x1007, &isr_val))
	{
	// event
	eventAttentionFail(RC_CFAM_ERROR);

	// trace
	trace<level::INFO>("Error! cfam read 0x1007 FAILED");
	}
	else
	{
	std::stringstream ss; // log message stream
	ss << "cfam 0x1007 = 0x";
	ss << std::hex << std::setw(8) << std::setfill('0');
	ss << isr_val;
	trace<level::INFO>(ss.str().c_str());

	// get interrupt enabled special attentions mask
	if (RC_SUCCESS != fsi_read(target, 0x100d, &isr_mask))
	{
	// event
	eventAttentionFail(RC_CFAM_ERROR);

	// trace
	trace<level::INFO>("Error! cfam read 0x100d FAILED");
	}
	else
	{
	// CFAM 0x100d is expected to have bits set corresponding
	// to attentions that can generate an attention interrupt.
	// We will trace this register value to help debug cases
	// where the attention handler was invoked unexpectedly.

	std::stringstream ss; // log message stream
	ss << "cfam 0x100d = 0x";
	ss << std::hex << std::setw(8) << std::setfill('0');
	ss << isr_mask;
	trace<level::INFO>(ss.str().c_str());

	// bit 0 on "left": bit 30 = SBE vital attention
	if (isr_val & 0x00000002)
	{
	active_attentions.emplace_back(
	Attention::Vital, handleVital, target, i_config);
	}

	// bit 0 on "left": bit 1 = checkstop
	if (isr_val & 0x40000000)
	{
	active_attentions.emplace_back(Attention::Checkstop,
	handleCheckstop, target,
	i_config);
	}

	// bit 0 on "left": bit 2 = special attention
	if (isr_val & 0x20000000)
	{
	active_attentions.emplace_back(Attention::Special,
	handleSpecial, target,
	i_config);
	}
	} // cfam 0x100d valid
	} // cfam 0x1007 valid
	} // fsi 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 SBE vital attention
	*
	* @param i_attention Attention object
	* @return 0 indicates that the vital attention was successfully handled
	* 1 indicates that the vital attention was NOT successfully handled
	*/
	int handleVital(Attention* i_attention)
	{
	int rc = RC_SUCCESS; // assume vital handled

	trace<level::INFO>("vital handler started");

	// if vital handling enabled, handle vital attention
	if (false == (i_attention->getConfig()->getFlag(enVital)))
	{
	trace<level::INFO>("vital handling disabled");
	rc = RC_NOT_HANDLED;
	}
	else
	{
	eventVital();
	}

	return rc;
	}

	/**
	* @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");

	// 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
	// comment a PEL if any errors are found.
	if (true != analyzer::analyzeHardware())
	{
	rc = RC_ANALYZER_ERROR;
	}
	}

	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 infor 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

	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))
	{
	trace<level::INFO>("calling sbe_mpipl_get_ti_info");
	sbe_mpipl_get_ti_info(tiInfoTarget, &tiInfo, &tiInfoLen);
	if (tiInfo == nullptr)
	{
	trace<level::INFO>("TI info data ptr is null after call");
	}
	}
	}
	}

	// Note: If we want to support running this application on architectures
	// of different endian-ness we need to handler that here. The TI data
	// will always be written in big-endian order.

	// If TI area exists and is marked valid we can assume TI occurred
	if ((nullptr != tiInfo) && (0 != tiInfo[0]))
	{
	trace<level::INFO>("TI info data present and valid");

	TiDataArea* tiDataArea = (TiDataArea*)tiInfo;

	// trace a few known TI data area values
	std::stringstream ss; // log message stream
	ss << "TI data command = " << tiDataArea->command;
	trace<level::INFO>(ss.str().c_str());
	ss << "TI data SRC format = " << tiDataArea->srcFormat;
	trace<level::INFO>(ss.str().c_str());
	ss << "TI data hb_terminate_type = " << tiDataArea->hbTerminateType;
	trace<level::INFO>(ss.str().c_str());

	if (true == (i_attention->getConfig()->getFlag(enTerminate)))
	{
	trace<level::INFO>("TI (terminate immediately)");

	// Call TI special attention handler
	rc = tiHandler(tiDataArea);
	}
	}
	// TI area not valid, assume breakpoint
	else
	{
	trace<level::INFO>("TI info NOT available, assume breakpoint");

	if (true == (i_attention->getConfig()->getFlag(enBreakpoints)))
	{
	trace<level::INFO>("breakpoint");

	// Call the breakpoint special attention handler
	bpHandler();
	}
	}

	// release TI data buffer
	if (nullptr != tiInfo)
	{
	free(tiInfo);
	}

	if (RC_SUCCESS != rc)
	{
	trace<level::INFO>("Special attn not handled");
	}

	return rc;
	}

	} // namespace attn