/* IBM_PROLOG_BEGIN_TAG */ /* This is an automatically generated prolog. */ /* */ /* $Source: src/usr/fsiscom/fsiscom.C $ */ /* */ /* OpenPOWER HostBoot Project */ /* */ /* Contributors Listed Below - COPYRIGHT 2011,2017 */ /* [+] 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 */ /*****************************************************************************/ // I n c l u d e s /*****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include "fsiscom.H" //Globals/Constants // Trace definition trace_desc_t* g_trac_fsiscom = NULL; TRAC_INIT(&g_trac_fsiscom, FSISCOM_COMP_NAME, 2*KILOBYTE); //2K // Easy macro replace for unit testing //#define TRACUCOMP(args...) TRACFCOMP(args) #define TRACUCOMP(args...) namespace FSISCOM { union ioData6432 { uint64_t data64; struct { uint32_t data32_0; uint32_t data32_1; }; }; /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// /** * @brief Common function to add callouts and FFDC and recover * from PIB errors * * @param[in] i_target SCom target * @param[in] i_errlog Error log to append to * @param[in] i_status FSI2PIB status register * @param[in] i_scomAddr Address that we failed on */ void pib_error_handler( TARGETING::Target* i_target, errlHndl_t i_errlog, uint32_t i_status, uint32_t i_scomAddr ) { //Add this target to the FFDC ERRORLOG::ErrlUserDetailsTarget(i_target,"SCOM Target").addToLog(i_errlog); //Look for a totally dead chip if( i_status == 0xFFFFFFFF ) { // if things are this broken then chances are there are bigger // problems, we can just make some guesses on what to call out // make code the highest since there are other issues i_errlog->addProcedureCallout(HWAS::EPUB_PRC_HB_CODE, HWAS::SRCI_PRIORITY_HIGH); // callout this chip as Low and deconfigure it i_errlog->addHwCallout( i_target, HWAS::SRCI_PRIORITY_LOW, HWAS::DELAYED_DECONFIG, HWAS::GARD_NULL ); // grab all the FFDC we can think of FSI::getFsiFFDC( FSI::FFDC_OPB_FAIL_SLAVE, i_errlog, i_target ); FSI::getFsiFFDC( FSI::FFDC_READWRITE_FAIL, i_errlog, i_target ); FSI::getFsiFFDC( FSI::FFDC_PIB_FAIL, i_errlog, i_target ); } else if( i_status & PIB_ERROR_BITS ) { //Add the callouts for the specific PCB/PIB error //Take bits 17-19 from the 32-bit pib error data uint32_t pib_error = i_status >> 12; pib_error = pib_error & 0x7; PIB::addFruCallouts( i_target, pib_error, i_scomAddr, i_errlog ); //Grab the PIB2OPB Status reg for a Resource Occupied error if( pib_error == PIB::PIB_RESOURCE_OCCUPIED ) //piberr=001 { FSI::getFsiFFDC( FSI::FFDC_PIB_FAIL, i_errlog, i_target ); FSI::getFsiFFDC( FSI::FFDC_OPB_FAIL_SLAVE, i_errlog, i_target ); } } else if( i_status & PROTECTION_CHECK ) { //Most likely a code error i_errlog->addProcedureCallout(HWAS::EPUB_PRC_HB_CODE, HWAS::SRCI_PRIORITY_HIGH); //Any regs to grab related to secure mode? } else { //Some other hardware error, e.g. parity error // callout this chip as High and deconfigure it i_errlog->addHwCallout( i_target, HWAS::SRCI_PRIORITY_HIGH, HWAS::DELAYED_DECONFIG, HWAS::GARD_NULL ); } //Recovery sequence from Markus // if SCOM fails and FSI Master displays "MasterTimeOut" // then 7,6 // else if SCOM fails and FSI2PIB Status shows PIB abort // then just perform unit reset (6) and wait 1 ms // else (PIB_abort='0' but PIB error is unequal 0) // then just perform unit reset (6) (wait not needed). uint32_t l_command = 0; size_t op_size = sizeof(uint32_t); errlHndl_t l_err = DeviceFW::deviceOp( DeviceFW::WRITE, i_target, &l_command, op_size, DEVICE_FSI_ADDRESS(ENGINE_RESET_REG)); if(l_err) { TRACFCOMP( g_trac_fsiscom, ERR_MRK"Error resetting FSI : %.4X", ERRL_GETRC_SAFE(l_err) ); l_err->plid(i_errlog->plid()); errlCommit(l_err,FSISCOM_COMP_ID); } nanosleep( 0,NS_PER_MSEC ); //sleep for ms } /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// errlHndl_t fsiScomPerformOp(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 l_err = NULL; uint64_t l_scomAddr = va_arg(i_args,uint64_t); ioData6432 scratchData; uint32_t l_command = 0; uint32_t l_status = 0; bool need_unlock = false; size_t op_size = sizeof(uint32_t); mutex_t* l_mutex = NULL; do{ if( io_buflen != sizeof(uint64_t) ) { TRACFCOMP( g_trac_fsiscom, ERR_MRK "fsiScomPerformOp> Invalid data length : io_buflen=%d", io_buflen ); /*@ * @errortype * @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP * @reasoncode FSISCOM::RC_INVALID_LENGTH * @userdata1 SCOM Address * @userdata2 Data Length * @devdesc fsiScomPerformOp> Invalid data length (!= 8 bytes) * @custdesc A problem occurred during the IPL of the system: * Invalid data length for a SCOM operation. */ l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE, FSISCOM::MOD_FSISCOM_PERFORMOP, FSISCOM::RC_INVALID_LENGTH, l_scomAddr, TO_UINT64(io_buflen)); l_err->addProcedureCallout( HWAS::EPUB_PRC_HB_CODE, HWAS::SRCI_PRIORITY_LOW ); ERRORLOG::ErrlUserDetailsTarget(i_target,"SCOM Target"). addToLog(l_err); break; } if( (l_scomAddr & 0xFFFFFFFF80000000) != 0) { TRACFCOMP( g_trac_fsiscom, ERR_MRK "fsiScomPerformOp> Address contains more than 31 bits : l_scomAddr=0x%.16X", l_scomAddr ); /*@ * @errortype * @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP * @reasoncode FSISCOM::RC_INVALID_ADDRESS * @userdata1 SCOM Address * @userdata2 Target HUID * @devdesc fsiScomPerformOp> Address contains * more than 31 bits. * @custdesc A problem occurred during the IPL of the system: * Invalid address on a SCOM operation. */ l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE, FSISCOM::MOD_FSISCOM_PERFORMOP, FSISCOM::RC_INVALID_ADDRESS, l_scomAddr, TARGETING::get_huid(i_target)); l_err->addProcedureCallout( HWAS::EPUB_PRC_HB_CODE, HWAS::SRCI_PRIORITY_LOW ); ERRORLOG::ErrlUserDetailsTarget(i_target,"SCOM Target"). addToLog(l_err); break; } l_command = static_cast(l_scomAddr & 0x000000007FFFFFFF); // use the chip-specific mutex attribute l_mutex = i_target->getHbMutexAttr(); if(i_opType == DeviceFW::WRITE) { memcpy(&(scratchData.data64), io_buffer, 8); TRACUCOMP( g_trac_fsiscom, "fsiScomPerformOp> Write(l_scomAddr=0x%X, l_data0=0x%X, l_data1=0x%X)", l_scomAddr, scratchData.data32_0, scratchData.data32_1); // atomic section >> mutex_lock(l_mutex); need_unlock = true; //write bits 0-31 to data0 l_err = DeviceFW::deviceOp( DeviceFW::WRITE, i_target, &scratchData.data32_0, op_size, DEVICE_FSI_ADDRESS(DATA0_REG)); if(l_err) { break; } //write bits 32-63 to data1 l_err = DeviceFW::deviceOp( DeviceFW::WRITE, i_target, &scratchData.data32_1, op_size, DEVICE_FSI_ADDRESS(DATA1_REG)); if(l_err) { break; } //write to FSI2PIB command reg starts write operation //bit 0 high => write command l_command = 0x80000000 | l_command; l_err = DeviceFW::deviceOp( DeviceFW::WRITE, i_target, &l_command, op_size, DEVICE_FSI_ADDRESS(COMMAND_REG)); if(l_err) { break; } //check status reg to see result l_err = DeviceFW::deviceOp( DeviceFW::READ, i_target, &l_status, op_size, DEVICE_FSI_ADDRESS(STATUS_REG)); if(l_err) { break; } // Check the status reg for errors if( l_status & ANY_ERROR_BIT ) { TRACFCOMP( g_trac_fsiscom, ERR_MRK"fsiScomPerformOp:Write: PCB/PIB error received: l_status=0x%X)", l_status); /*@ * @errortype * @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP * @reasoncode FSISCOM::RC_WRITE_ERROR * @userdata1 SCOM Addr * @userdata2[00:31] Target HUID * @userdata2[32:63] SCOM Status Reg * @devdesc fsiScomPerformOp> Error returned * from SCOM Engine after write * @custdesc A problem occurred during the IPL of the system: * Error returned from SCOM engine after write. */ l_err = new ERRORLOG::ErrlEntry( ERRORLOG::ERRL_SEV_UNRECOVERABLE, FSISCOM::MOD_FSISCOM_PERFORMOP, FSISCOM::RC_WRITE_ERROR, l_scomAddr, TWO_UINT32_TO_UINT64( TARGETING::get_huid(i_target), l_status)); // call common error handler to do callouts and recovery pib_error_handler( i_target, l_err, l_status, l_scomAddr ); break; } // atomic section << need_unlock = false; mutex_unlock(l_mutex); } else if(i_opType == DeviceFW::READ) { TRACUCOMP( g_trac_fsiscom, "fsiScomPerformOp: Read(l_scomAddr=0x%.8X)", l_scomAddr); // atomic section >> mutex_lock(l_mutex); need_unlock = true; //write to FSI2PIB command reg starts read operation // bit 0 low -> read command l_err = DeviceFW::deviceOp( DeviceFW::WRITE, i_target, &l_command, op_size, DEVICE_FSI_ADDRESS(COMMAND_REG)); if(l_err) { break; } //check ststus reg to see result l_err = DeviceFW::deviceOp( DeviceFW::READ, i_target, &l_status, op_size, DEVICE_FSI_ADDRESS(STATUS_REG)); if(l_err) { break; } // Check the status reg for errors if( l_status & ANY_ERROR_BIT ) { TRACFCOMP( g_trac_fsiscom, ERR_MRK"fsiScomPerformOp:Read: PCB/PIB error received: l_status=0x%0.8X)", l_status); /*@ * @errortype * @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP * @reasoncode FSISCOM::RC_READ_ERROR * @userdata1 SCOM Addr * @userdata2[00:31] Target HUID * @userdata2[32:63] SCOM Status Reg * @devdesc fsiScomPerformOp> Error returned from SCOM Engine after read. * @custdesc A problem occurred during the IPL of the system: * Error returned from SCOM engine after read. */ l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE, FSISCOM::MOD_FSISCOM_PERFORMOP, FSISCOM::RC_READ_ERROR, l_scomAddr, TWO_UINT32_TO_UINT64( TARGETING::get_huid(i_target), l_status)); // call common error handler to do callouts and recovery pib_error_handler( i_target, l_err, l_status, l_scomAddr ); break; } //read bits 0-31 to data0 l_err = DeviceFW::deviceOp( DeviceFW::READ, i_target, &scratchData.data32_0, op_size, DEVICE_FSI_ADDRESS(DATA0_REG)); if(l_err) { break; } //read bits 32-63 to data1 l_err = DeviceFW::deviceOp( DeviceFW::READ, i_target, &scratchData.data32_1, op_size, DEVICE_FSI_ADDRESS(DATA1_REG)); if(l_err) { break; } // atomic section << need_unlock = false; mutex_unlock(l_mutex); TRACUCOMP( g_trac_fsiscom, "fsiScomPerformOp: Read: l_scomAddr=0x%X, l_data0=0x%X, l_data1=0x%X", l_scomAddr, scratchData.data32_0, scratchData.data32_1); memcpy(io_buffer, &(scratchData.data64), 8); } else { TRACFCOMP( g_trac_fsiscom, ERR_MRK"fsiScomPerformOp:Unsupported Operation Type: i_opType=%d)", i_opType); /*@ * @errortype * @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP * @reasoncode FSISCOM::RC_INVALID_OPTYPE * @userdata1[0:31] Operation Type (i_opType) : 0=READ, 1=WRITE * @userdata1[32:64] Input scom address * @userdata2 Target HUID * @devdesc fsiScomPerformOp> Unsupported Operation Type specified * @custdesc A problem occurred during the IPL of the system: * Unsupported SCOM operation type. */ l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE, FSISCOM::MOD_FSISCOM_PERFORMOP, FSISCOM::RC_INVALID_OPTYPE, TWO_UINT32_TO_UINT64(i_opType, l_scomAddr), TARGETING::get_huid(i_target), true /*SW error*/); //Add this target to the FFDC ERRORLOG::ErrlUserDetailsTarget(i_target,"SCOM Target"). addToLog(l_err); break; } }while(0); if( need_unlock && l_mutex ) { mutex_unlock(l_mutex); } return l_err; } // Register SCom access functions to DD framework DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD, DeviceFW::FSISCOM, TARGETING::TYPE_PROC, fsiScomPerformOp); DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD, DeviceFW::FSISCOM, TARGETING::TYPE_MEMBUF, fsiScomPerformOp); } // end namespace