diff options
| -rw-r--r-- | core/pldm/pldm-responder.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/core/pldm/pldm-responder.c b/core/pldm/pldm-responder.c index 26a202d..a233ea3 100644 --- a/core/pldm/pldm-responder.c +++ b/core/pldm/pldm-responder.c @@ -237,6 +237,8 @@ static struct pldm_cmd pldm_base_get_types = { /* * Extended error codes defined for the Base command set. */ +#define INVALID_DATA_TRANSFER_HANDLE 0x80 +#define INVALID_TRANSFER_OPERATION_FLAG 0x81 #define INVALID_PLDM_TYPE_IN_REQUEST_DATA 0x83 #define INVALID_PLDM_VERSION_IN_REQUEST_DATA 0x84 @@ -332,6 +334,97 @@ static struct pldm_cmd pldm_base_get_commands = { .handler = base_get_commands_handler, }; +/* + * GetPLDMVersion (0x03) + * The GetPLDMVersion command can be used to retrieve the PLDM base + * specification versions that the PLDM terminus supports, as well as + * the PLDM Type specification versions supported for each PLDM Type. + */ +static int base_get_version_handler(const struct pldm_rx_data *rx) +{ + uint32_t version_data[2]; + size_t data_size = PLDM_MSG_SIZE(struct pldm_get_version_resp) + sizeof(version_data); + const struct pldm_type *type; + struct pldm_tx_data *tx; + uint8_t type_id, opflag; + uint32_t xfer_handle; + size_t payload_len; + int rc; + + payload_len = rx->msg_len - sizeof(struct pldm_msg_hdr); + rc = decode_get_version_req(rx->msg, payload_len, + &xfer_handle, + &opflag, + &type_id); + if (rc) { + prlog(PR_ERR, "Failed to decode GetPLDMVersion request, rc = %d", rc); + cc_resp(rx, rx->hdrinf.pldm_type, + rx->hdrinf.command, PLDM_ERROR); + return OPAL_INTERNAL_ERROR; + } + + /* reject multipart requests */ + if (opflag != PLDM_GET_FIRSTPART) { + cc_resp(rx, rx->hdrinf.pldm_type, + rx->hdrinf.command, + INVALID_TRANSFER_OPERATION_FLAG); + return OPAL_PARAMETER; + } + + type = find_type(type_id); + if (!type) { + cc_resp(rx, rx->hdrinf.pldm_type, + rx->hdrinf.command, + INVALID_PLDM_TYPE_IN_REQUEST_DATA); + return OPAL_PARAMETER; + } + + /* pack a scratch buffer with our version(s) and CRC32 the lot */ + memcpy(&version_data[0], &type->version, 4); + + version_data[1] = cpu_to_le32(crc32(&type->version, 4)); + + /* create a PLDM response for GetPLDMVersion */ + tx = zalloc(sizeof(struct pldm_tx_data) + data_size); + if (!tx) + return OPAL_NO_MEM; + tx->data_size = data_size; + tx->tag_owner = true; + tx->msg_tag = rx->msg_tag; + + rc = encode_get_version_resp(rx->hdrinf.instance, + PLDM_SUCCESS, + 0x0, /* no handle */ + PLDM_START_AND_END, + (ver32_t *) version_data, + sizeof(version_data), + (struct pldm_msg *)tx->data); + if (rc != PLDM_SUCCESS) { + prlog(PR_ERR, "Encode GetPLDMVersion 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 GetPLDMVersion response, rc = %d\n", rc); + free(tx); + return OPAL_HARDWARE; + } + + free(tx); + return OPAL_SUCCESS; +} + +static struct pldm_cmd pldm_base_get_version = { + .name = "PLDM_GET_PLDM_VERSION", + .pldm_cmd_id = PLDM_GET_PLDM_VERSION, + .handler = base_get_version_handler, +}; + int pldm_responder_handle_request(struct pldm_rx_data *rx) { const struct pldm_type *type; @@ -370,6 +463,7 @@ int pldm_responder_init(void) add_cmd(&pldm_base_type, &pldm_base_get_tid); add_cmd(&pldm_base_type, &pldm_base_get_types); add_cmd(&pldm_base_type, &pldm_base_get_commands); + add_cmd(&pldm_base_type, &pldm_base_get_version); return OPAL_SUCCESS; } |