+ __checkReturn efx_rc_t
+efx_mcdi_get_capabilities(
+ __in efx_nic_t *enp,
+ __out_opt uint32_t *flagsp,
+ __out_opt uint16_t *rx_dpcpu_fw_idp,
+ __out_opt uint16_t *tx_dpcpu_fw_idp,
+ __out_opt uint32_t *flags2p,
+ __out_opt uint32_t *tso2ncp)
+{
+ efx_mcdi_req_t req;
+ EFX_MCDI_DECLARE_BUF(payload, MC_CMD_GET_CAPABILITIES_IN_LEN,
+ MC_CMD_GET_CAPABILITIES_V2_OUT_LEN);
+ boolean_t v2_capable;
+ efx_rc_t rc;
+
+ req.emr_cmd = MC_CMD_GET_CAPABILITIES;
+ req.emr_in_buf = payload;
+ req.emr_in_length = MC_CMD_GET_CAPABILITIES_IN_LEN;
+ req.emr_out_buf = payload;
+ req.emr_out_length = MC_CMD_GET_CAPABILITIES_V2_OUT_LEN;
+
+ efx_mcdi_execute_quiet(enp, &req);
+
+ if (req.emr_rc != 0) {
+ rc = req.emr_rc;
+ goto fail1;
+ }
+
+ if (req.emr_out_length_used < MC_CMD_GET_CAPABILITIES_OUT_LEN) {
+ rc = EMSGSIZE;
+ goto fail2;
+ }
+
+ if (flagsp != NULL)
+ *flagsp = MCDI_OUT_DWORD(req, GET_CAPABILITIES_OUT_FLAGS1);
+
+ if (rx_dpcpu_fw_idp != NULL)
+ *rx_dpcpu_fw_idp = MCDI_OUT_WORD(req,
+ GET_CAPABILITIES_OUT_RX_DPCPU_FW_ID);
+
+ if (tx_dpcpu_fw_idp != NULL)
+ *tx_dpcpu_fw_idp = MCDI_OUT_WORD(req,
+ GET_CAPABILITIES_OUT_TX_DPCPU_FW_ID);
+
+ if (req.emr_out_length_used < MC_CMD_GET_CAPABILITIES_V2_OUT_LEN)
+ v2_capable = B_FALSE;
+ else
+ v2_capable = B_TRUE;
+
+ if (flags2p != NULL) {
+ *flags2p = (v2_capable) ?
+ MCDI_OUT_DWORD(req, GET_CAPABILITIES_V2_OUT_FLAGS2) :
+ 0;
+ }
+
+ if (tso2ncp != NULL) {
+ *tso2ncp = (v2_capable) ?
+ MCDI_OUT_WORD(req,
+ GET_CAPABILITIES_V2_OUT_TX_TSO_V2_N_CONTEXTS) :
+ 0;
+ }
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+