@@ -169,6 +169,65 @@ static struct pldm_cmd pldm_base_get_tid = {
.handler = base_get_tid_handler,
};
+/*
+ * GetPLDMTypes (0x04)
+ * The GetPLDMTypes command can be used to discover the PLDM type
+ * capabilities supported by a PLDM terminus and to get a list of the
+ * PLDM types that are supported.
+ */
+static int base_get_types_handler(const struct pldm_rx_data *rx)
+{
+ size_t data_size = PLDM_MSG_SIZE(struct pldm_get_types_resp);
+ bitmap_elem_t type_map[BITMAP_ELEMS(PLDM_MAX_TYPES)];
+ struct pldm_tx_data *tx;
+ struct pldm_type *iter;
+ int rc;
+
+ /* build the supported type list from the registered type
+ * handlers
+ */
+ memset(type_map, 0, sizeof(type_map));
+ list_for_each(&pldm_type_list, iter, link)
+ bitmap_set_bit(type_map, iter->pldm_type_id);
+
+ for (int i = 0; i < BITMAP_ELEMS(PLDM_MAX_TYPES); i++)
+ type_map[i] = cpu_to_le64(type_map[i]);
+
+ /* create a PLDM response message for GetPLDMTypes */
+ tx = zalloc(sizeof(struct pldm_tx_data) + data_size);
+ if (!tx)
+ return OPAL_NO_MEM;
+ tx->data_size = data_size;
+
+ rc = encode_get_types_resp(rx->hdrinf.instance,
+ PLDM_SUCCESS,
+ (bitfield8_t *)type_map,
+ (struct pldm_msg *)tx->data);
+ if (rc != PLDM_SUCCESS) {
+ prlog(PR_ERR, "Encode GetPLDMTypes Error, rc: %d\n", rc);
+ cc_resp(rx, rx->hdrinf.pldm_type,
+ rx->hdrinf.command, PLDM_ERROR);
+ free(tx);
+ return OPAL_PARAMETER;
+ }
+
+ rc = pldm_mctp_message_tx(tx);
+ if (rc) {
+ prlog(PR_ERR, "Failed to send GetPLDMTypes response, rc = %d\n", rc);
+ free(tx);
+ return OPAL_HARDWARE;
+ }
+
+ free(tx);
+ return OPAL_SUCCESS;
+}
+
+static struct pldm_cmd pldm_base_get_types = {
+ .name = "PLDM_GET_PLDM_TYPES",
+ .pldm_cmd_id = PLDM_GET_PLDM_TYPES,
+ .handler = base_get_types_handler,
+};
+
int pldm_responder_handle_request(struct pldm_rx_data *rx)
{
const struct pldm_type *type;
@@ -205,6 +264,7 @@ int pldm_responder_init(void)
/* Register mandatory commands we'll respond to - DSP0240 */
add_type(&pldm_base_type);
add_cmd(&pldm_base_type, &pldm_base_get_tid);
+ add_cmd(&pldm_base_type, &pldm_base_get_types);
return OPAL_SUCCESS;
}