[Skiboot] [PATCH V6 16/21] core/pldm: PLDM for FRU data Specification
Abhishek SIngh Tomar
abhishek at linux.ibm.com
Fri Sep 30 03:07:26 AEST 2022
On Tue, Sep 13, 2022 at 12:27:00PM +0200, Christophe Lombard wrote:
> Specification, defines a FRU data format that provides platform asset
> information including part number, serial number and manufacturer.
>
> Use the GetFruRecordByOptionReq command to get specific FRU (Field
> Replaceable Unit) record according the Record Set Identifier, the Record
> Type and the field Type.
>
> Signed-off-by: Christophe Lombard <clombard at linux.vnet.ibm.com>
Reviewed-by: Abhishek Singh Tomar <abhishek at linux.ibm.com>
> ---
> core/pldm/Makefile.inc | 2 +-
> core/pldm/pldm-fru-requests.c | 136 ++++++++++++++++++++++++++++++++++
> core/pldm/pldm-mctp.c | 9 ++-
> core/pldm/pldm.h | 2 +
> 4 files changed, 147 insertions(+), 2 deletions(-)
> create mode 100644 core/pldm/pldm-fru-requests.c
>
> diff --git a/core/pldm/Makefile.inc b/core/pldm/Makefile.inc
> index 42645427..4d08e371 100644
> --- a/core/pldm/Makefile.inc
> +++ b/core/pldm/Makefile.inc
> @@ -12,7 +12,7 @@ CFLAGS_$(PLDM_DIR)/pldm-bios-requests.o = -Wno-strict-prototypes
>
> PLDM_OBJS = pldm-mctp.o pldm-responder.o pldm-requester.o
> PLDM_OBJS += pldm-base-requests.o pldm-platform-requests.o
> -PLDM_OBJS += pldm-bios-requests.o
> +PLDM_OBJS += pldm-bios-requests.o pldm-fru-requests.o
>
> PLDM = $(PLDM_DIR)/built-in.a
> $(PLDM): $(PLDM_OBJS:%=$(PLDM_DIR)/%)
> diff --git a/core/pldm/pldm-fru-requests.c b/core/pldm/pldm-fru-requests.c
> new file mode 100644
> index 00000000..02c9b968
> --- /dev/null
> +++ b/core/pldm/pldm-fru-requests.c
> @@ -0,0 +1,136 @@
> +// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
> +// Copyright 2022 IBM Corp.
> +
> +#define pr_fmt(fmt) "PLDM: " fmt
> +
> +#include <cpu.h>
> +#include <opal.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <inttypes.h>
> +#include <pldm/libpldm/fru.h>
> +#include "pldm.h"
> +
> +static void *fru_record_table;
> +static size_t fru_record_length;
> +
> +static bool fru_ready;
> +
> +static void fru_init_complete(bool success)
> +{
> + /* Read not successful, error out and free the buffer */
> + if (!success) {
> + fru_ready = false;
> +
> + if (fru_record_table != NULL) {
> + free(fru_record_table);
> + fru_record_length = 0;
> + }
> + return;
> + }
> +
> + /* Mark ready */
> + fru_ready = true;
> +}
> +
> +static int get_fru_record_table_req(void **record_table_data,
> + size_t *record_table_length)
> +{
> + char request_msg[PKT_SIZE(struct pldm_get_fru_record_table_req)];
> + uint8_t transfer_flag, completion_code;
> + size_t response_len, payload_len;
> + uint32_t next_transfer_handle;
> + uint8_t *table_data;
> + size_t table_length;
> + void *response_msg;
> + int rc;
> +
> + struct pldm_get_fru_record_table_req fru_record_table_req = {
> + .data_transfer_handle = 0, /* (0 if operation op is FIRSTPART) */
> + .transfer_operation_flag = PLDM_GET_FIRSTPART,
> + };
> + payload_len = sizeof(struct pldm_get_fru_record_table_req);
> +
> + /* Encode the file table request */
> + rc = encode_get_fru_record_table_req(
> + DEFAULT_INSTANCE_ID,
> + fru_record_table_req.data_transfer_handle,
> + fru_record_table_req.transfer_operation_flag,
> + (struct pldm_msg *)request_msg,
> + payload_len);
> + if (rc != PLDM_SUCCESS) {
> + prlog(PR_ERR, "Encode GetFruRecordTableReq Error, rc: %d\n", rc);
> + return OPAL_PARAMETER;
> + }
> +
> + /* Send and get the response message bytes */
> + rc = pldm_requester_queue_and_wait(request_msg, sizeof(request_msg),
> + &response_msg, &response_len);
> + if (rc) {
> + prlog(PR_ERR, "Communication Error, req: GetFruRecordTableReq, rc: %d\n", rc);
> + return rc;
> + }
> +
> + /* Decode the message */
> + payload_len = response_len - sizeof(struct pldm_msg_hdr);
> + table_data = zalloc(payload_len);
> +
> + rc = decode_get_fru_record_table_resp(
> + response_msg,
> + payload_len,
> + &completion_code,
> + &next_transfer_handle,
> + &transfer_flag,
> + table_data,
> + &table_length);
> + if (rc != PLDM_SUCCESS || completion_code != PLDM_SUCCESS) {
> + prlog(PR_ERR, "Decode GetFruRecordTableReq Error, rc: %d, cc: %d\n",
> + rc, completion_code);
> +
> + free(table_data);
> + free(response_msg);
> + return OPAL_PARAMETER;
> + }
> +
> + /* we do not support multipart transfer */
> + if ((next_transfer_handle != PLDM_GET_NEXTPART) ||
> + (transfer_flag != PLDM_START_AND_END)) {
> + prlog(PR_ERR, "Transfert GetFruRecordTableReq not complete, "
> + "transfer_hndl: %d, transfer_flag: %d\n",
> + next_transfer_handle,
> + transfer_flag);
> +
> + free(table_data);
> + free(response_msg);
> + return OPAL_PARAMETER;
> + }
> +
> + *record_table_length = table_length;
> + *record_table_data = zalloc(table_length);
> + memcpy(*record_table_data, table_data, table_length);
> +
> + free(table_data);
> + free(response_msg);
> +
> + return OPAL_SUCCESS;
> +}
> +
> +int pldm_fru_init(void)
> +{
> + int rc;
> +
> + /* get fru record table */
> + rc = get_fru_record_table_req(&fru_record_table,
> + &fru_record_length);
> + if (rc)
> + goto err;
> +
> + fru_init_complete(true);
> + prlog(PR_DEBUG, "%s - done\n", __func__);
> +
> + return OPAL_SUCCESS;
> +
> +err:
> + fru_init_complete(false);
> + return rc;
> +}
> diff --git a/core/pldm/pldm-mctp.c b/core/pldm/pldm-mctp.c
> index ff4f71c3..542edc27 100644
> --- a/core/pldm/pldm-mctp.c
> +++ b/core/pldm/pldm-mctp.c
> @@ -148,8 +148,15 @@ int pldm_mctp_init(uint8_t mode)
>
> /* Get Bios data */
> rc = pldm_bios_init();
> - if (rc)
> + if (rc) {
> prlog(PR_ERR, "Failed to retrieve Bios data\n");
> + goto out;
> + }
> +
> + /* Get Fru data */
> + rc = pldm_fru_init();
> + if (rc)
> + prlog(PR_ERR, "Failed to retrieve Fru data\n");
>
> out:
> prlog(PR_NOTICE, "%s - done, rc: %d\n", __func__, rc);
> diff --git a/core/pldm/pldm.h b/core/pldm/pldm.h
> index db2f9dcd..f9e9db40 100644
> --- a/core/pldm/pldm.h
> +++ b/core/pldm/pldm.h
> @@ -47,6 +47,8 @@ int pldm_responder_handle_request(struct pldm_rx_data *rx);
> int pldm_responder_init(void);
>
> /* Requester support */
> +int pldm_fru_init(void);
> +
> int pldm_bios_find_lid_by_attr_name(const char *name, char **lid);
> int pldm_bios_get_lids_id(char **lid_ids_string);
> int pldm_bios_init(void);
> --
> 2.37.3
>
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