@@ -824,6 +824,128 @@ static struct pldm_cmd pldm_platform_set_state_effecter_states = {
.handler = platform_set_state_effecter_states_handler,
};
+/*
+ * GetPDR (0x51)
+ * The GetPDR command is used to retrieve individual PDRs from a PDR
+ * Repository. The record is identified by the PDR recordHandle value
+ * that is passed in the request.
+ */
+static int platform_get_pdr_handle(const struct pldm_rx_data *rx)
+{
+ uint32_t data_transfer_handle, pdr_data_size = 0;
+ uint32_t record_handle, next_record_handle;
+ uint16_t request_count, record_change_number;
+ uint8_t transfer_op_flag, *pdr_data = NULL;
+ size_t payload_len, data_size;
+ struct pldm_tx_data *tx;
+ int rc;
+
+ payload_len = rx->msg_len - sizeof(struct pldm_msg_hdr);
+ rc = decode_get_pdr_req(rx->msg,
+ payload_len,
+ &record_handle,
+ &data_transfer_handle,
+ &transfer_op_flag,
+ &request_count,
+ &record_change_number);
+ if (rc) {
+ prlog(PR_ERR, "Failed to decode GetPDR request, rc = %d\n", rc);
+ cc_resp(rx, rx->hdrinf.pldm_type,
+ rx->hdrinf.command, PLDM_ERROR);
+ return OPAL_INTERNAL_ERROR;
+ }
+
+ if (data_transfer_handle != 0) {
+ /* We don't support multipart transfers */
+ prlog(PR_ERR, "Got invalid data transfer handle 0x%x in GetPDR request\n",
+ data_transfer_handle);
+ cc_resp(rx, rx->hdrinf.pldm_type,
+ rx->hdrinf.command,
+ PLDM_PLATFORM_INVALID_DATA_TRANSFER_HANDLE);
+ return OPAL_PARAMETER;
+ }
+
+ if (transfer_op_flag != PLDM_GET_FIRSTPART) {
+ prlog(PR_ERR, "Got invalid transfer op flag 0x%x in GetPDR request\n",
+ transfer_op_flag);
+ cc_resp(rx, rx->hdrinf.pldm_type,
+ rx->hdrinf.command,
+ PLDM_PLATFORM_INVALID_TRANSFER_OPERATION_FLAG);
+ return OPAL_PARAMETER;
+ }
+
+ if (record_change_number != 0) {
+ prlog(PR_ERR, "Got invalid record change number 0x%x in GetPDR request\n",
+ record_change_number);
+ cc_resp(rx, rx->hdrinf.pldm_type,
+ rx->hdrinf.command,
+ PLDM_PLATFORM_INVALID_RECORD_CHANGE_NUMBER);
+ return OPAL_PARAMETER;
+ }
+
+ /* find PDR record by record handle */
+ prlog(PR_INFO, "BMC requesting PDR handle %d\n", record_handle);
+
+ rc = pldm_platform_pdr_find_record(record_handle,
+ &pdr_data,
+ &pdr_data_size,
+ &next_record_handle);
+ if (rc) {
+ prlog(PR_ERR, "Got invalid record handle 0x%x in GetPDR request\n",
+ record_handle);
+ cc_resp(rx, rx->hdrinf.pldm_type,
+ rx->hdrinf.command,
+ PLDM_PLATFORM_INVALID_RECORD_HANDLE);
+ return OPAL_PARAMETER;
+ }
+
+ /* create a PLDM response message for GetPDR */
+ data_size = sizeof(struct pldm_msg_hdr) +
+ sizeof(struct pldm_get_pdr_resp) +
+ pdr_data_size;
+
+ tx = zalloc(sizeof(struct pldm_tx_data) + data_size);
+ if (!tx)
+ return OPAL_NO_MEM;
+ tx->data_size = data_size - 1;
+ tx->tag_owner = true;
+ tx->msg_tag = rx->msg_tag;
+
+ rc = encode_get_pdr_resp(rx->hdrinf.instance,
+ PLDM_SUCCESS,
+ next_record_handle,
+ 0, /* No remaining data */
+ PLDM_START_AND_END,
+ pdr_data_size,
+ pdr_data,
+ 0, /* CRC not used for START_AND_END */
+ (struct pldm_msg *)tx->data);
+ if (rc != PLDM_SUCCESS) {
+ prlog(PR_ERR, "Encode GetPDR Error, rc: %d\n", rc);
+ cc_resp(rx, rx->hdrinf.pldm_type,
+ rx->hdrinf.command, PLDM_ERROR);
+ free(tx);
+ return OPAL_PARAMETER;
+ }
+
+ /* send PLDM message over MCTP */
+ rc = pldm_mctp_message_tx(tx);
+ if (rc) {
+ prlog(PR_ERR, "Failed to send GetPDR response, rc = %d\n", rc);
+ free(tx);
+ return OPAL_HARDWARE;
+ }
+
+ free(tx);
+ return OPAL_SUCCESS;
+}
+
+static struct pldm_cmd pldm_platform_get_pdr = {
+ .name = "PLDM_GET_PDR",
+ .pldm_cmd_id = PLDM_GET_PDR,
+ .handler = platform_get_pdr_handle,
+};
+
int pldm_responder_handle_request(struct pldm_rx_data *rx)
{
const struct pldm_type *type;
@@ -870,6 +992,7 @@ int pldm_responder_init(void)
add_cmd(&pldm_platform_type, &pldm_platform_event_message);
add_cmd(&pldm_platform_type, &pldm_platform_get_state_sensor_readings);
add_cmd(&pldm_platform_type, &pldm_platform_set_state_effecter_states);
+ add_cmd(&pldm_platform_type, &pldm_platform_get_pdr);
return OPAL_SUCCESS;
}
The GetPDR command is used to retrieve individual PDRs from a PDR repository. The record is identified by the PDR recordHandle value that is passed in the request. Signed-off-by: Christophe Lombard <clombard@linux.ibm.com> --- core/pldm/pldm-responder.c | 123 +++++++++++++++++++++++++++++++++++++ 1 file changed, 123 insertions(+)