+#if EFSYS_OPT_LOOPBACK
+
+ __checkReturn efx_rc_t
+efx_port_loopback_set(
+ __in efx_nic_t *enp,
+ __in efx_link_mode_t link_mode,
+ __in efx_loopback_type_t loopback_type)
+{
+ efx_port_t *epp = &(enp->en_port);
+ efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
+ const efx_mac_ops_t *emop = epp->ep_emop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
+ EFSYS_ASSERT(emop != NULL);
+
+ EFSYS_ASSERT(link_mode < EFX_LINK_NMODES);
+
+ if (EFX_TEST_QWORD_BIT(encp->enc_loopback_types[link_mode],
+ loopback_type) == 0) {
+ rc = ENOTSUP;
+ goto fail1;
+ }
+
+ if (epp->ep_loopback_type == loopback_type &&
+ epp->ep_loopback_link_mode == link_mode)
+ return (0);
+
+ if ((rc = emop->emo_loopback_set(enp, link_mode, loopback_type)) != 0)
+ goto fail2;
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+#if EFSYS_OPT_NAMES
+
+static const char * const __efx_loopback_type_name[] = {
+ "OFF",
+ "DATA",
+ "GMAC",
+ "XGMII",
+ "XGXS",
+ "XAUI",
+ "GMII",
+ "SGMII",
+ "XGBR",
+ "XFI",
+ "XAUI_FAR",
+ "GMII_FAR",
+ "SGMII_FAR",
+ "XFI_FAR",
+ "GPHY",
+ "PHY_XS",
+ "PCS",
+ "PMA_PMD",
+ "XPORT",
+ "XGMII_WS",
+ "XAUI_WS",
+ "XAUI_WS_FAR",
+ "XAUI_WS_NEAR",
+ "GMII_WS",
+ "XFI_WS",
+ "XFI_WS_FAR",
+ "PHYXS_WS",
+ "PMA_INT",
+ "SD_NEAR",
+ "SD_FAR",
+ "PMA_INT_WS",
+ "SD_FEP2_WS",
+ "SD_FEP1_5_WS",
+ "SD_FEP_WS",
+ "SD_FES_WS",
+};
+
+ __checkReturn const char *
+efx_loopback_type_name(
+ __in efx_nic_t *enp,
+ __in efx_loopback_type_t type)
+{
+ EFX_STATIC_ASSERT(EFX_ARRAY_SIZE(__efx_loopback_type_name) ==
+ EFX_LOOPBACK_NTYPES);
+
+ _NOTE(ARGUNUSED(enp))
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(type, <, EFX_LOOPBACK_NTYPES);
+
+ return (__efx_loopback_type_name[type]);
+}
+
+#endif /* EFSYS_OPT_NAMES */
+
+#endif /* EFSYS_OPT_LOOPBACK */
+