/* IBM_PROLOG_BEGIN_TAG */ /* This is an automatically generated prolog. */ /* */ /* $Source: src/occ_gpe0/apss_read.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 */ #include "pk.h" #include "ppe42_scom.h" #include "ipc_api.h" #include "ipc_async_cmd.h" #include "pss_constants.h" #include #include "apss_util.h" /* * Function Specifications: * * Name: apss_start_pwr_meas_read * * Description: Start a read of the power measurement from APSS * * Inputs: cmd is a pointer to IPC msg's cmd and cmd_data struct * * Outputs: error: sets rc, address, and ffdc in the cmd_data's * GpeErrorStruct * * End Function Specification */ void apss_start_pwr_meas_read(ipc_msg_t* cmd, void* arg) { // Note: arg was set to 0 in ipc func table (ipc_func_tables.c), so don't use it. // the ipc arguments passed through the ipc_msg_t structure, has a pointer // to the G_gpe_start_pwr_meas_read_args struct. int rc; uint64_t regValue; // a pointer to hold the putscom_abs register value ipc_async_cmd_t *async_cmd = (ipc_async_cmd_t*)cmd; apss_start_args_t *args = (apss_start_args_t*)async_cmd->cmd_data; // clear error, ffdc, and rc (feedback to 405) // These may be overwritten by error codes if errors occur // REVIEW: Since the OCC clears these fields, do we really have to repeat this here? args->error.error = 0; args->error.rc = 0; args->error.ffdc = 0; do{ // wait for ADC completion, or timeout after 5 micro seconds. // scom register SPIPSS_ADC_STATUS_REG's bit 0 (HWCTRL_ONGOING) // indicates when completion occurs. rc = wait_spi_completion(&(args->error), SPIPSS_ADC_STATUS_REG, 5); if(rc) // Timeout Reached, and SPI transaction didn't complete, copy over rc { PK_TRACE("apss_start_pwr_meas_read:wait_spi_completion Timed out, rc = 0x%08x", rc); // FFDC set in wait_spi_completion break; } // Setup control regs: // SPIPSS_ADC_CTRL_REG0: // frame_size=16, out_count=16, in_count=16 // rc = putscom(0, SPIPSS_ADC_CTRL_REG0, uint64_t 0x4000100000000000); regValue = 0x4000100000000000; rc = putscom_abs(SPIPSS_ADC_CTRL_REG0, regValue); if(rc) { PK_TRACE("apss_start_pwr_meas_read: SPIPSS_ADC_CTRL_REG0 putscom failed. rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_CTRL_REG0, APSS_RC_SCOM_PUT_FAILED, rc); break; } // SPIPSS_ADC_CTRL_REG1: ADC FSM // clock_divider=7, frames=16 // rc = putscom_abs(SPIPSS_ADC_CTRL_REG1, 0x8093c00000000000); regValue = 0x8093c00000000000; rc = putscom_abs(SPIPSS_ADC_CTRL_REG1, regValue); if(rc) { PK_TRACE("apss_start_pwr_meas_read: SPIPSS_ADC_CTRL_REG1 putscom failed. rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_CTRL_REG1, APSS_RC_SCOM_PUT_FAILED, rc); break; } // SPIPSS_ADC_CTRL_REG2: ADC interframe delay // 5 usec // rc = putscom_abs(SPIPSS_ADC_CTRL_REG2, 0x0019000000000000); regValue = 0x0019000000000000; rc = putscom_abs(SPIPSS_ADC_CTRL_REG2, regValue); if(rc) { PK_TRACE("apss_start_pwr_meas_read: SPIPSS_ADC_CTRL_REG2 putscom failed. rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_CTRL_REG2, APSS_RC_SCOM_PUT_FAILED, rc); break; } // SPIPSS_ADC_WDATA_REG: // APSS command to continue previous command // rc = putscom_abs(SPIPSS_ADC_WDATA_REG, 0x0000000000000000); regValue = 0x0000000000000000; rc = putscom_abs(SPIPSS_ADC_WDATA_REG, regValue); if(rc) { PK_TRACE("apss_start_pwr_meas_read: SPIPSS_ADC_WDATA_REG putscom failed. rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_WDATA_REG, APSS_RC_SCOM_PUT_FAILED, rc); break; } // SPIPSS_ADC_COMMAND_REG: // Start SPI Transaction // rc = putscom_abs(SPIPSS_ADC_COMMAND_REG, 0x8000000000000000); regValue = 0x8000000000000000; rc = putscom_abs(SPIPSS_ADC_COMMAND_REG, regValue); if(rc) { PK_TRACE("apss_start_pwr_meas_read: SPIPSS_ADC_COMMAND_REG putscom failed. rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_COMMAND_REG, APSS_RC_SCOM_PUT_FAILED, rc); break; } } while(0); // send back a response, IPC success even if ffdc/rc are non zeros rc = ipc_send_rsp(cmd, IPC_RC_SUCCESS); if(rc) { PK_TRACE("apss_start_pwr_meas_read: Failed to send response back. Halting GPE0", rc); apss_set_ffdc(&(args->error), 0x00, APSS_RC_IPC_SEND_FAILED, rc); pk_halt(); } } /* * Function Specifications: * * Name: apss_continue_pwr_meas_read * * Description: Continue the read of the power measurement from APSS * Read the 16 12-bit channels * * Inputs: cmd is a pointer to IPC msg's cmd and cmd_data struct * * Outputs: cmd->cmd_data->meas_data[]: contains 16 channels data, * formated as 4*64 bits array. * error: sets rc, address, and ffdc * in the cmd_data's GpeErrorStruct * * End Function Specification */ void apss_continue_pwr_meas_read(ipc_msg_t* cmd, void* arg) { // the ipc arguments are passed through the ipc_msg_t structure, has a pointer // to the G_gpe_continue_pwr_meas_read_args int rc; ipc_async_cmd_t *async_cmd = (ipc_async_cmd_t*)cmd; apss_continue_args_t *args = (apss_continue_args_t*)async_cmd->cmd_data; // Clear error, ffdc, and rc (feedback to 405) // These may be overwritten by error codes if errors occur // REVIEW: Since the OCC clears these fields, do we really have to repeat this here? args->error.error = 0; args->error.rc = 0; args->error.ffdc = 0; do{ // wait for ADC completion, or timeout after 100 micro seconds. // scom register SPIPSS_ADC_STATUS_REG's bit 0 (HWCTRL_ONGOING) // indicates when completion occurs. rc = wait_spi_completion(&(args->error), SPIPSS_ADC_STATUS_REG, 100); if(rc) // Timeout Reached, and SPI transaction didn't complete { PK_TRACE("apss_continue_pwr_meas_read:wait_spi_completion Timed out, rc = 0x%08x", rc); // FFDC already set inside wait_spi_completion break; } // SIMICS VERIFY: ADC readings are done for 32 bytes = 4 * 64 bit reads // they are saved in the common OCC-GPE0 area: verify using SIMICS // Check every scom read, store rc in the error.rc if it fails. // read four channels - adc[0-3] - from APSS into meas_data[0] rc = getscom_abs(SPIPSS_ADC_RDATA_REG0, (uint64_t*) args->meas_data); if(rc) { PK_TRACE("apss_continue_pwr_meas_read: SPIPSS_ADC_RDATA_REG0 getscom failed with rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_RDATA_REG0, APSS_RC_SCOM_GET_FAILED, rc); break; } // read four channels - adc[4-7] - from APSS into meas_data[1] rc = getscom_abs(SPIPSS_ADC_RDATA_REG1, (uint64_t*) &args->meas_data[1]); if(rc) { PK_TRACE("apss_continue_pwr_meas_read: SPIPSS_ADC_RDATA_REG1 getscom failed with rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_RDATA_REG1, APSS_RC_SCOM_GET_FAILED, rc); break; } // read four channels - adc[8-11] - from APSS into meas_data[2] rc = getscom_abs(SPIPSS_ADC_RDATA_REG2, (uint64_t*) &args->meas_data[2]); if(rc) { PK_TRACE("apss_continue_pwr_meas_read: SPIPSS_ADC_RDATA_REG2 getscom failed with rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_RDATA_REG2, APSS_RC_SCOM_GET_FAILED, rc); break; } // read four channels - adc[12-15] - from APSS into meas_data[3] rc = getscom_abs(SPIPSS_ADC_RDATA_REG3, (uint64_t*) &args->meas_data[3]); if(rc) { PK_TRACE("apss_continue_pwr_meas_read: SPIPSS_ADC_RDATA_REG3 getscom failed with rc = 0x%08x", rc); apss_set_ffdc(&(args->error), SPIPSS_ADC_RDATA_REG3, APSS_RC_SCOM_GET_FAILED, rc); break; } } while(0); // send back a response, IPC success (even if ffdc/rc are non zeros) rc = ipc_send_rsp(cmd, IPC_RC_SUCCESS); if(rc) { PK_TRACE("apss_continue_pwr_meas_read: Failed to send response back. Halting GPE0", rc); apss_set_ffdc(&(args->error), 0x00, APSS_RC_IPC_SEND_FAILED, rc); pk_halt(); } } /* * Function Specifications: * * Name: apss_complete_pwr_meas_read * * Description: Complete the reading of the power measurement from APSS * Read the TOD (and GPIOs) * * Inputs: cmd is a pointer to IPC msg's cmd and cmd_data struct * * Outputs: cmd->cmd_data->meas_data[3]:TOD * error: sets rc, address, and ffdc * in the cmd_data's GpeErrorStruct * * End Function Specification */ void apss_complete_pwr_meas_read(ipc_msg_t* cmd, void* arg) { // the ipc arguments are passed through the ipc_msg_t structure, has a pointer // to the G_gpe_complete_pwr_meas_read_args int rc; ipc_async_cmd_t *async_cmd = (ipc_async_cmd_t*)cmd; apss_complete_args_t *args = (apss_complete_args_t*)async_cmd->cmd_data; // clear error, ffdc, and rc (feedback to 405) // These may be overwritten by error codes if errors occur // REVIEW: Since the OCC clears these fields, do we really have to repeat this here? args->error.error = 0; args->error.rc = 0; args->error.ffdc = 0; do { // wait for ADC completion, or timeout after 100 micro seconds. // scom register SPIPSS_ADC_STATUS_REG's bit 0 (HWCTRL_ONGOING) // indicates when completion occurs. rc = wait_spi_completion(&(args->error), SPIPSS_ADC_STATUS_REG, 100); if(rc) // Timeout Reached, and SPI transaction didn't complete { PK_TRACE("apss_complete_pwr_meas_read:wait_spi_completion Timed out, rc = 0x%08x", rc); // FFDC already set inside wait_spi_completion break; } // SIMICS Verify: Check proper transfer to the OCC under simics /* @TODO - TEMP: APSS TOD register is not defined in simics yet. Commented out until implemented. rc = getscom_abs(TOD_VALUE_REG, &args->meas_data[3]); if(rc) { PK_TRACE("apss_complete_pwr_meas_read: TOD_VALUE_REG getscom failed. rc = 0x%08x", rc); apss_set_ffdc(&(args->error), TOD_VALUE_REG, APSS_RC_SCOM_GET_FAILED, rc); break; } */ } while(0); // send back a response, IPC success (even if ffdc/rc are non zeros) rc = ipc_send_rsp(cmd, IPC_RC_SUCCESS); if(rc) { PK_TRACE("apss_complete_pwr_meas_read: Failed to send response back. Halting GPE0", rc); apss_set_ffdc(&(args->error), 0x00, APSS_RC_IPC_SEND_FAILED, rc); pk_halt(); } }