1 files changed, 147 insertions, 0 deletions
diff --git a/core/pldm/pldm-fru-requests.c b/core/pldm/pldm-fru-requests.c
new file mode 100644
index 0000000..ae1d9fa
--- /dev/null
+++ b/core/pldm/pldm-fru-requests.c
@@ -0,0 +1,147 @@
+// 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 <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)
+{
+	size_t data_size = PLDM_MSG_SIZE(struct pldm_get_fru_record_table_req);
+	uint8_t transfer_flag, completion_code;
+	size_t response_len, payload_len;
+	struct pldm_tx_data *tx = NULL;
+	uint32_t next_transfer_handle;
+	uint8_t *table_data;
+	size_t table_length;
+	void *response_msg;
+	int rc = OPAL_SUCCESS;
+
+	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 */
+	tx = zalloc(sizeof(struct pldm_tx_data) + data_size);
+	if (!tx)
+		return OPAL_NO_MEM;
+	tx->data_size = data_size;
+
+	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 *)tx->data,
+			payload_len);
+	if (rc != PLDM_SUCCESS) {
+		prlog(PR_ERR, "Encode GetFruRecordTableReq Error, rc: %d\n", rc);
+		free(tx);
+		return OPAL_PARAMETER;
+	}
+
+	/* Send and get the response message bytes */
+	rc = pldm_requester_queue_and_wait(tx, &response_msg, &response_len);
+	if (rc) {
+		prlog(PR_ERR, "Communication Error, req: GetFruRecordTableReq, rc: %d\n", rc);
+		free(tx);
+		return rc;
+	}
+
+	/* Decode the message */
+	payload_len = response_len - sizeof(struct pldm_msg_hdr);
+	table_data = zalloc(payload_len);
+	if (!table_data) {
+		free(tx);
+		return OPAL_NO_MEM;
+	}
+
+	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);
+		rc = OPAL_PARAMETER;
+		goto out;
+	}
+
+	/* 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);
+		rc = OPAL_PARAMETER;
+		goto out;
+	}
+
+	*record_table_length = table_length;
+	*record_table_data = zalloc(table_length);
+	if (!record_table_data)
+		rc = OPAL_NO_MEM;
+	else
+		memcpy(*record_table_data, table_data, table_length);
+
+out:
+	free(tx);
+	free(table_data);
+	free(response_msg);
+	return rc;
+}
+
+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;
+}