diff options
Diffstat (limited to 'src/occ_gpe1/gpe1_dimm_control.c')
| -rw-r--r-- | src/occ_gpe1/gpe1_dimm_control.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/occ_gpe1/gpe1_dimm_control.c b/src/occ_gpe1/gpe1_dimm_control.c new file mode 100644 index 0000000..99d5395 --- /dev/null +++ b/src/occ_gpe1/gpe1_dimm_control.c @@ -0,0 +1,121 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/occ_gpe1/gpe1_dimm_control.c $ */ +/* */ +/* OpenPOWER OnChipController Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2015,2016 */ +/* [+] 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 "gpe_err.h" +#include "gpe_util.h" +#include "dimm_structs.h" +#include "gpe1.h" + +/* + * Function Specifications: + * + * Name: gpe_dimm_control + * + * Description: DIMM control code on the GPE + * + * 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 + */ + +#define NUM_NIMBUS_MC_PAIRS 2 +#define MAX_NUM_MCU_PORTS 4 + +void gpe_dimm_control(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; + dimm_control_args_t *args = (dimm_control_args_t*)async_cmd->cmd_data; + + int mc = args->mc, port = args->port; // memory controller pair and port + + args->error.error = 0; + args->error.ffdc = 0; + + do + { // read N/M DIMM Throttling Control SCOM Register for specified MC pair and port numbers + rc = getscom_abs(N_M_DIMM_TCR(mc,port), ®Value); + if(rc) + { + PK_TRACE("gpe_dimm_control: N/M DIMM Throttling Control Register read fails" + "MC#|Port:0x%08x, Address:0x%08x, rc:0x%08x", + (uint32_t)((mc << 16) | port), + N_M_DIMM_TCR(mc,port), rc); + + gpe_set_ffdc(&(args->error), N_M_DIMM_TCR(mc,port), + GPE_RC_SCOM_GET_FAILED, rc); + break; + } + + // Clear old N values for slot and port + regValue &= 0x1FFFFFFFF; + // copy slot and port N values (31 bits) from passed dimmNumeratorValues + regValue |= ((uint64_t) (args->dimmNumeratorValues.word32 & 0xFFFFFFFE)) << 32 ; + + // Write new slot and port N Values + rc = putscom_abs(N_M_DIMM_TCR(mc,port), regValue); + if(rc) + { + PK_TRACE("gpe_dimm_control: N/M DIMM Throttling Control Register write fails" + "dimm#:%d, Address:0x%04x, Nvalues:0x%08x, rc:0x%08x", + (uint16_t)((mc << 8) | port), + N_M_DIMM_TCR(mc,port), regValue, rc); + + gpe_set_ffdc(&(args->error), N_M_DIMM_TCR(mc,port), + GPE_RC_SCOM_GET_FAILED, rc); + break; + } + else + { + GPE1_DIMM_DBG("gpe_dimm_control: N/M DIMM Throttling Control Register write" + "mc|port#:0x%04x, Address:0x%08x, Nvalues:0x%08x", + (uint16_t)((mc << 8) | port), + N_M_DIMM_TCR(mc,port), regValue); + } + } 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("gpe_dimm_control: Failed to send response back. Halting GPE1", rc); + gpe_set_ffdc(&(args->error), 0x00, GPE_RC_IPC_SEND_FAILED, rc); + pk_halt(); + } +} + + |
