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Diffstat (limited to 'src/usr/expaccess/mmioscomdd.C')
| -rw-r--r-- | src/usr/expaccess/mmioscomdd.C | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/usr/expaccess/mmioscomdd.C b/src/usr/expaccess/mmioscomdd.C new file mode 100644 index 000000000..bf4513158 --- /dev/null +++ b/src/usr/expaccess/mmioscomdd.C @@ -0,0 +1,158 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/usr/expaccess/mmioscomdd.C $ */ +/* */ +/* OpenPOWER HostBoot Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2011,2019 */ +/* [+] 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 mmioscomdd.C + * + * @brief Implementation of MMIO SCOM operations to OCMB chip */ + +/*****************************************************************************/ +// I n c l u d e s +/*****************************************************************************/ +#include <exp_inband.H> // mmio_get_scom +#include <lib/shared/exp_consts.H> // IBM_SCOM_INDICATOR +#include <hwpf/fapi2/include/fapi2_hwp_executor.H>// FAPI_EXEC_HWP +#include "mmioscomdd.H" //mmioScomPerformOp +#include "expscom_trace.H" //g_trac_expscom +#include "expscom_utils.H" //validateInputs + +namespace MMIOSCOMDD +{ + +DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD, + DeviceFW::IBSCOM, + TARGETING::TYPE_OCMB_CHIP, + mmioScomPerformOp); + +/////////////////////////////////////////////////////////////////////////////// +// See header for doxygen documentation +/////////////////////////////////////////////////////////////////////////////// +errlHndl_t mmioScomPerformOp(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 = nullptr; + fapi2::ReturnCode l_rc = fapi2::FAPI2_RC_SUCCESS; + // The only extra arg should be the scomAddress + uint64_t l_expAddr = va_arg(i_args,uint64_t); + + // The fapi2 put/get mmioScom interfaces require a fapi2::buffer so convert + // to a uint64_t buffer (for IBM scom) and uint32_t buffer (for Microchip scoms) + fapi2::buffer<uint64_t> l_fapi2Buffer64(*reinterpret_cast<uint64_t *>(io_buffer)); + fapi2::buffer<uint32_t> l_fapi2Buffer32; + l_fapi2Buffer64.extractToRight<32,32>(l_fapi2Buffer32); + + do + { + // First make sure the inputs are valid + l_err = EXPSCOM::validateInputs ( i_opType, i_target, io_buflen, l_expAddr); + + if(l_err) + { + // Write a trace out to the buffer and then collect it on the log + // this way we can know if the fail was in i2cScomPerformOp or mmioScomPerformOp + TRACFCOMP( g_trac_expscom, ERR_MRK "mmioscomPerformOp> Validation of inputs failed see error logs for details "); + l_err->collectTrace(EXPSCOM_COMP_NAME); + break; + } + + // Check if this is a IBM_SCOM address by &ing the address with IBM_SCOM_INDICATOR + // If the indicator is not set, then we will assume this is a microChip address + if( (l_expAddr & mss::exp::i2c::IBM_SCOM_INDICATOR) == mss::exp::i2c::IBM_SCOM_INDICATOR) + { + // READ and WRITE equates to mss::exp::ib::getScom and mss::exp::ib::putScom respectively. + // any other OP is invalid. i/o data is expected to be 8 bytes for IBM scoms + if(i_opType == DeviceFW::READ) + { + FAPI_EXEC_HWP(l_rc , mss::exp::ib::getScom, i_target, l_expAddr, l_fapi2Buffer64); + l_err = fapi2::rcToErrl(l_rc); + if(l_err) + { + l_err->collectTrace(FAPI_IMP_TRACE_NAME,256); + l_err->collectTrace(FAPI_TRACE_NAME,384); + TRACFCOMP( g_trac_expscom, ERR_MRK "mmioscomPerformOp> mss::exp::ib::getScom failed for HUID 0x%x Address 0x%lx ", + TARGETING::get_huid(i_target), l_expAddr ); + } + else + { + // Copy contents of what we read to io_buffer + memcpy(io_buffer, reinterpret_cast<uint8_t *>(l_fapi2Buffer64.pointer()), sizeof(uint64_t)); + } + } + else + { + FAPI_EXEC_HWP(l_rc , mss::exp::ib::putScom, i_target, l_expAddr, l_fapi2Buffer64); + l_err = fapi2::rcToErrl(l_rc); + if(l_err) + { + l_err->collectTrace(FAPI_IMP_TRACE_NAME,256); + l_err->collectTrace(FAPI_TRACE_NAME,384); + TRACFCOMP( g_trac_expscom, ERR_MRK "mmioscomPerformOp> mss::exp::ib::putScom failed for HUID 0x%x Address 0x%lx ", + TARGETING::get_huid(i_target), l_expAddr ); + } + } + } + else + { + // READ and WRITE equates to mss::exp::ib::gettMMIO32 and mss::exp::ib::putMMIO32 respectively. + // any other OP is invalid. + if(i_opType == DeviceFW::READ) + { + FAPI_EXEC_HWP(l_rc , mss::exp::ib::getMMIO32, i_target, l_expAddr, l_fapi2Buffer32); + l_err = fapi2::rcToErrl(l_rc); + if(l_err) + { + TRACFCOMP( g_trac_expscom, ERR_MRK "mmioscomPerformOp> getMMIO32 failed for HUID 0x%x Address 0x%lx ", + TARGETING::get_huid(i_target), l_expAddr ); + } + else + { + // Put the contexts of the 32 bit buffer right justified into the 64 bit buffer + l_fapi2Buffer64.flush<0>(); + l_fapi2Buffer64.insertFromRight<32,32>(l_fapi2Buffer32); + // Copy contents of 64 bit buffer to io_buffer + memcpy(io_buffer, reinterpret_cast<uint8_t *>(l_fapi2Buffer64.pointer()), sizeof(uint64_t)); + } + } + else + { + FAPI_EXEC_HWP(l_rc , mss::exp::ib::putMMIO32, i_target, l_expAddr, l_fapi2Buffer32); + l_err = fapi2::rcToErrl(l_rc); + if(l_err) + { + TRACFCOMP( g_trac_expscom, ERR_MRK "mmioscomPerformOp> putMMIO32 failed for HUID 0x%x Address 0x%lx ", + TARGETING::get_huid(i_target), l_expAddr ); + } + } + + } + + } while (0); + return l_err; +} +}
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