/* IBM_PROLOG_BEGIN_TAG */ /* This is an automatically generated prolog. */ /* */ /* $Source: src/ppe/hwp/nest/p9_sbe_fabricinit.C $ */ /* */ /* OpenPOWER OnChipController Project */ /* */ /* Contributors Listed Below - COPYRIGHT 2015 */ /* [+] 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 p9_sbe_fabricinit.C /// @brief Initialize island-mode fabric configuration (FAPI2) /// /// @author Joe McGill /// @author Christy Graves /// // // *HWP HWP Owner: Joe McGill // *HWP FW Owner: Thi Tran // *HWP Team: Nest // *HWP Level: 3 // *HWP Consumed by: SBE // //------------------------------------------------------------------------------ // Includes //------------------------------------------------------------------------------ #include //------------------------------------------------------------------------------ // Constant definitions //------------------------------------------------------------------------------ // ADU SCOM register address definitions // TODO: these are currently incorrect in the FigTree/generated SCOM address header // including locally defined address constants here for testing purposes const uint64_t PU_ALTD_CMD_REG = 0x00090001; const uint64_t PU_ALTD_STATUS_REG = 0x00090003; const uint64_t PU_SND_MODE_REG = 0x00090021; // FBC SCOM register address definitions // TODO: these are currently not present in the generated SCOM adddress header // including locally defined address constants here for testing purposes const uint64_t PU_FBC_MODE_REG = 0x05011C0A; // ADU delay/polling constants const uint64_t FABRICINIT_DELAY_HW_NS = 1000; // 1us const uint64_t FABRICINIT_DELAY_SIM_CYCLES = 200; // ADU Command Register field/bit definitions const uint32_t ALTD_CMD_START_OP_BIT = 2; const uint32_t ALTD_CMD_CLEAR_STATUS_BIT = 3; const uint32_t ALTD_CMD_RESET_FSM_BIT = 4; const uint32_t ALTD_CMD_ADDRESS_ONLY_BIT = 6; const uint32_t ALTD_CMD_LOCK_BIT = 11; const uint32_t ALTD_CMD_DROP_PRIORITY_BIT = 20; const uint32_t ALTD_CMD_OVERWRITE_PBINIT_BIT = 22; const uint32_t ALTD_CMD_TTYPE_START_BIT = 25; const uint32_t ALTD_CMD_TTYPE_END_BIT = 31; const uint32_t ALTD_CMD_TSIZE_START_BIT = 32; const uint32_t ALTD_CMD_TSIZE_END_BIT = 39; const uint32_t ALTD_CMD_TTYPE_NUM_BITS = (ALTD_CMD_TTYPE_END_BIT-ALTD_CMD_TTYPE_START_BIT+1); const uint32_t ALTD_CMD_TSIZE_NUM_BITS = (ALTD_CMD_TSIZE_END_BIT-ALTD_CMD_TSIZE_START_BIT+1); const uint32_t ALTD_CMD_TTYPE_PBOP_EN_ALL = 0x3F; const uint32_t ALTD_CMD_TSIZE_PBOP_EN_ALL = 0x0B; // ADU Status Register field/bit definitions const uint32_t ALTD_STATUS_ADDR_DONE_BIT = 2; const uint32_t ALTD_STATUS_PBINIT_MISSING_BIT = 18; const uint32_t ALTD_STATUS_CRESP_START_BIT = 59; const uint32_t ALTD_STATUS_CRESP_END_BIT = 63; const uint32_t ALTD_STATUS_CRESP_NUM_BITS = (ALTD_STATUS_CRESP_END_BIT-ALTD_STATUS_CRESP_START_BIT+1); const uint32_t ALTD_STATUS_CRESP_ACK_DONE = 0x04; // ADU PMisc Register field/bit definitions const uint32_t ALTD_SND_MODE_FBC_STOP_BIT = 22; // FBC Mode Register field/bit definitions const uint32_t PU_FBC_MODE_PB_INITIALIZED_BIT = 0; //------------------------------------------------------------------------------ // Function definitions //------------------------------------------------------------------------------ fapi2::ReturnCode p9_sbe_fabricinit(const fapi2::Target & i_target) { FAPI_INF("Start"); fapi2::buffer l_cmd_data; fapi2::buffer l_pmisc_mode_data; fapi2::buffer l_status_data_act; fapi2::buffer l_status_data_exp; fapi2::buffer l_fbc_mode_data; // check state of fabric pervasive stop control signal // if set, this would prohibit all fabric commands from being broadcast FAPI_TRY(fapi2::getScom(i_target, PU_SND_MODE_REG, l_pmisc_mode_data), "Error reading ADU PMisc Mode register"); FAPI_ASSERT(!l_pmisc_mode_data.getBit(), fapi2::P9_SBE_FABRICINIT_FBC_STOPPED_ERR().set_TARGET(i_target), "Pervasive stop control is asserted, so fabricinit will not run!"); // write ADU Command Register to attempt lock acquisition // hold lock until finished with sequence FAPI_DBG("Lock and reset ADU ..."); l_cmd_data.setBit(); FAPI_TRY(fapi2::putScom(i_target, PU_ALTD_CMD_REG, l_cmd_data), "Error writing ADU Command Register to acquire lock"); // clear ADU status/reset state machine l_cmd_data.setBit() .setBit(); FAPI_TRY(fapi2::putScom(i_target, PU_ALTD_CMD_REG, l_cmd_data), "Error writing ADU Command Register to clear status and reset state machine"); // launch init command FAPI_DBG("Launching fabric init command via ADU ..."); l_cmd_data.setBit() .clearBit() .clearBit() .setBit() .setBit() .setBit(); l_cmd_data.insertFromRight(ALTD_CMD_TTYPE_PBOP_EN_ALL); l_cmd_data.insertFromRight(ALTD_CMD_TSIZE_PBOP_EN_ALL); FAPI_TRY(fapi2::putScom(i_target, PU_ALTD_CMD_REG, l_cmd_data), "Error writing ADU Command Register to launch init operation"); // delay prior to checking for completion FAPI_TRY(fapi2::delay(FABRICINIT_DELAY_HW_NS, FABRICINIT_DELAY_SIM_CYCLES), "Error from delay"); // read ADU Status Register and check for expected pattern FAPI_DBG("Checking status of ADU operation ..."); FAPI_TRY(fapi2::getScom(i_target, PU_ALTD_STATUS_REG, l_status_data_act), "Error polling ADU Status Register"); l_status_data_exp.setBit(); l_status_data_exp.insertFromRight(ALTD_STATUS_CRESP_ACK_DONE); FAPI_ASSERT(l_status_data_exp == l_status_data_act, fapi2::P9_SBE_FABRICINIT_FAILED_ERR().set_TARGET(i_target), "Fabric init failed, or mismatch in expected ADU status!"); // clear ADU Command Register to release lock FAPI_DBG("Success! Releasing ADU lock ..."); l_cmd_data = 0; FAPI_TRY(fapi2::putScom(i_target, PU_ALTD_CMD_REG, l_cmd_data), "Error writing ADU Command Register to release lock"); // confirm that fabric was successfully initialized FAPI_DBG("Checking status of FBC init ..."); FAPI_TRY(fapi2::getScom(i_target, PU_FBC_MODE_REG, l_fbc_mode_data), "Error reading FBC Mode Register"); FAPI_ASSERT(l_fbc_mode_data.getBit(), fapi2::P9_SBE_FABRICINIT_NO_INIT_ERR().set_TARGET(i_target), "ADU command succeded, but fabric was not initialized!"); fapi_try_exit: FAPI_INF("End"); return fapi2::current_err; }