/* SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright(c) 2019-2021 Xilinx, Inc.
 * Copyright(c) 2007-2019 Solarflare Communications Inc.
 */

#include "efx.h"
#include "efx_impl.h"


	__checkReturn	efx_rc_t
efx_family(
	__in		uint16_t venid,
	__in		uint16_t devid,
	__out		efx_family_t *efp,
	__out		unsigned int *membarp)
{
	if (venid == EFX_PCI_VENID_SFC) {
		switch (devid) {
#if EFSYS_OPT_SIENA
		case EFX_PCI_DEVID_SIENA_F1_UNINIT:
			/*
			 * Hardware default for PF0 of uninitialised Siena.
			 * manftest must be able to cope with this device id.
			 */
		case EFX_PCI_DEVID_BETHPAGE:
		case EFX_PCI_DEVID_SIENA:
			*efp = EFX_FAMILY_SIENA;
			*membarp = EFX_MEM_BAR_SIENA;
			return (0);
#endif /* EFSYS_OPT_SIENA */

#if EFSYS_OPT_HUNTINGTON
		case EFX_PCI_DEVID_HUNTINGTON_PF_UNINIT:
			/*
			 * Hardware default for PF0 of uninitialised Huntington.
			 * manftest must be able to cope with this device id.
			 */
		case EFX_PCI_DEVID_FARMINGDALE:
		case EFX_PCI_DEVID_GREENPORT:
			*efp = EFX_FAMILY_HUNTINGTON;
			*membarp = EFX_MEM_BAR_HUNTINGTON_PF;
			return (0);

		case EFX_PCI_DEVID_FARMINGDALE_VF:
		case EFX_PCI_DEVID_GREENPORT_VF:
			*efp = EFX_FAMILY_HUNTINGTON;
			*membarp = EFX_MEM_BAR_HUNTINGTON_VF;
			return (0);
#endif /* EFSYS_OPT_HUNTINGTON */

#if EFSYS_OPT_MEDFORD
		case EFX_PCI_DEVID_MEDFORD_PF_UNINIT:
			/*
			 * Hardware default for PF0 of uninitialised Medford.
			 * manftest must be able to cope with this device id.
			 */
		case EFX_PCI_DEVID_MEDFORD:
			*efp = EFX_FAMILY_MEDFORD;
			*membarp = EFX_MEM_BAR_MEDFORD_PF;
			return (0);

		case EFX_PCI_DEVID_MEDFORD_VF:
			*efp = EFX_FAMILY_MEDFORD;
			*membarp = EFX_MEM_BAR_MEDFORD_VF;
			return (0);
#endif /* EFSYS_OPT_MEDFORD */

#if EFSYS_OPT_MEDFORD2
		case EFX_PCI_DEVID_MEDFORD2_PF_UNINIT:
			/*
			 * Hardware default for PF0 of uninitialised Medford2.
			 * manftest must be able to cope with this device id.
			 */
		case EFX_PCI_DEVID_MEDFORD2:
		case EFX_PCI_DEVID_MEDFORD2_VF:
			*efp = EFX_FAMILY_MEDFORD2;
			*membarp = EFX_MEM_BAR_MEDFORD2;
			return (0);
#endif /* EFSYS_OPT_MEDFORD2 */

#if EFSYS_OPT_MEDFORD4
		case EFX_PCI_DEVID_MEDFORD4_PF_UNINIT:
			/*
			 * Hardware default for PF0 of uninitialised Medford4.
			 * manftest must be able to cope with this device id.
			 */
		case EFX_PCI_DEVID_MEDFORD4:
		case EFX_PCI_DEVID_MEDFORD4_VF:
		case EFX_PCI_DEVID_MEDFORD4_NO_LL:
		case EFX_PCI_DEVID_MEDFORD4_NO_LL_VF:
			*efp = EFX_FAMILY_MEDFORD4;
			*membarp = EFX_MEM_BAR_MEDFORD4;
			return (0);
#endif /* EFSYS_OPT_MEDFORD4 */

		case EFX_PCI_DEVID_FALCON:	/* Obsolete, not supported */
		default:
			break;
		}
	}

	if (venid == EFX_PCI_VENID_XILINX) {
		switch (devid) {
#if EFSYS_OPT_RIVERHEAD
		case EFX_PCI_DEVID_RIVERHEAD:
		case EFX_PCI_DEVID_RIVERHEAD_VF:
			*efp = EFX_FAMILY_RIVERHEAD;
			*membarp = EFX_MEM_BAR_RIVERHEAD;
			return (0);
#endif /* EFSYS_OPT_RIVERHEAD */
		default:
			break;
		}
	}

	*efp = EFX_FAMILY_INVALID;
	return (ENOTSUP);
}

#if EFSYS_OPT_PCI

	__checkReturn	efx_rc_t
efx_family_probe_bar(
	__in		uint16_t venid,
	__in		uint16_t devid,
	__in		efsys_pci_config_t *espcp,
	__in		const efx_pci_ops_t *epop,
	__out		efx_family_t *efp,
	__out		efx_bar_region_t *ebrp)
{
	efx_rc_t rc;
	unsigned int membar;

	if (venid == EFX_PCI_VENID_XILINX) {
		switch (devid) {
#if EFSYS_OPT_RIVERHEAD
		case EFX_PCI_DEVID_RIVERHEAD:
		case EFX_PCI_DEVID_RIVERHEAD_VF:
			rc = rhead_pci_nic_membar_lookup(espcp, epop, ebrp);
			if (rc == 0)
				*efp = EFX_FAMILY_RIVERHEAD;

			return (rc);
#endif /* EFSYS_OPT_RIVERHEAD */
		default:
			break;
		}
	}

	rc = efx_family(venid, devid, efp, &membar);
	if (rc == 0) {
		ebrp->ebr_type = EFX_BAR_TYPE_MEM;
		ebrp->ebr_index = membar;
		ebrp->ebr_offset = 0;
		ebrp->ebr_length = 0;
	}

	return (rc);
}

#endif /* EFSYS_OPT_PCI */

#if EFSYS_OPT_SIENA

static const efx_nic_ops_t	__efx_nic_siena_ops = {
	siena_nic_probe,		/* eno_probe */
	NULL,				/* eno_board_cfg */
	NULL,				/* eno_set_drv_limits */
	siena_nic_reset,		/* eno_reset */
	siena_nic_init,			/* eno_init */
	NULL,				/* eno_get_vi_pool */
	NULL,				/* eno_get_bar_region */
	NULL,				/* eno_hw_unavailable */
	NULL,				/* eno_set_hw_unavailable */
#if EFSYS_OPT_DIAG
	siena_nic_register_test,	/* eno_register_test */
#endif	/* EFSYS_OPT_DIAG */
	siena_nic_fini,			/* eno_fini */
	siena_nic_unprobe,		/* eno_unprobe */
};

#endif	/* EFSYS_OPT_SIENA */

#if EFSYS_OPT_HUNTINGTON

static const efx_nic_ops_t	__efx_nic_hunt_ops = {
	ef10_nic_probe,			/* eno_probe */
	hunt_board_cfg,			/* eno_board_cfg */
	ef10_nic_set_drv_limits,	/* eno_set_drv_limits */
	ef10_nic_reset,			/* eno_reset */
	ef10_nic_init,			/* eno_init */
	ef10_nic_get_vi_pool,		/* eno_get_vi_pool */
	ef10_nic_get_bar_region,	/* eno_get_bar_region */
	ef10_nic_hw_unavailable,	/* eno_hw_unavailable */
	ef10_nic_set_hw_unavailable,	/* eno_set_hw_unavailable */
#if EFSYS_OPT_DIAG
	ef10_nic_register_test,		/* eno_register_test */
#endif	/* EFSYS_OPT_DIAG */
	ef10_nic_fini,			/* eno_fini */
	ef10_nic_unprobe,		/* eno_unprobe */
};

#endif	/* EFSYS_OPT_HUNTINGTON */

#if EFSYS_OPT_MEDFORD

static const efx_nic_ops_t	__efx_nic_medford_ops = {
	ef10_nic_probe,			/* eno_probe */
	medford_board_cfg,		/* eno_board_cfg */
	ef10_nic_set_drv_limits,	/* eno_set_drv_limits */
	ef10_nic_reset,			/* eno_reset */
	ef10_nic_init,			/* eno_init */
	ef10_nic_get_vi_pool,		/* eno_get_vi_pool */
	ef10_nic_get_bar_region,	/* eno_get_bar_region */
	ef10_nic_hw_unavailable,	/* eno_hw_unavailable */
	ef10_nic_set_hw_unavailable,	/* eno_set_hw_unavailable */
#if EFSYS_OPT_DIAG
	ef10_nic_register_test,		/* eno_register_test */
#endif	/* EFSYS_OPT_DIAG */
	ef10_nic_fini,			/* eno_fini */
	ef10_nic_unprobe,		/* eno_unprobe */
};

#endif	/* EFSYS_OPT_MEDFORD */

#if EFSYS_OPT_MEDFORD2

static const efx_nic_ops_t	__efx_nic_medford2_ops = {
	ef10_nic_probe,			/* eno_probe */
	medford2_board_cfg,		/* eno_board_cfg */
	ef10_nic_set_drv_limits,	/* eno_set_drv_limits */
	ef10_nic_reset,			/* eno_reset */
	ef10_nic_init,			/* eno_init */
	ef10_nic_get_vi_pool,		/* eno_get_vi_pool */
	ef10_nic_get_bar_region,	/* eno_get_bar_region */
	ef10_nic_hw_unavailable,	/* eno_hw_unavailable */
	ef10_nic_set_hw_unavailable,	/* eno_set_hw_unavailable */
#if EFSYS_OPT_DIAG
	ef10_nic_register_test,		/* eno_register_test */
#endif	/* EFSYS_OPT_DIAG */
	ef10_nic_fini,			/* eno_fini */
	ef10_nic_unprobe,		/* eno_unprobe */
};

#endif	/* EFSYS_OPT_MEDFORD2 */

#if EFSYS_OPT_RIVERHEAD

static const efx_nic_ops_t	__efx_nic_riverhead_ops = {
	rhead_nic_probe,		/* eno_probe */
	rhead_board_cfg,		/* eno_board_cfg */
	rhead_nic_set_drv_limits,	/* eno_set_drv_limits */
	rhead_nic_reset,		/* eno_reset */
	rhead_nic_init,			/* eno_init */
	rhead_nic_get_vi_pool,		/* eno_get_vi_pool */
	rhead_nic_get_bar_region,	/* eno_get_bar_region */
	rhead_nic_hw_unavailable,	/* eno_hw_unavailable */
	rhead_nic_set_hw_unavailable,	/* eno_set_hw_unavailable */
#if EFSYS_OPT_DIAG
	rhead_nic_register_test,	/* eno_register_test */
#endif	/* EFSYS_OPT_DIAG */
	rhead_nic_fini,			/* eno_fini */
	rhead_nic_unprobe,		/* eno_unprobe */
};

#endif	/* EFSYS_OPT_RIVERHEAD */

#if EFSYS_OPT_MEDFORD4

static const efx_nic_ops_t	__efx_nic_medford4_ops = {
	ef10_nic_probe,			/* eno_probe */
	medford2_board_cfg,		/* eno_board_cfg */
	ef10_nic_set_drv_limits,	/* eno_set_drv_limits */
	ef10_nic_reset,			/* eno_reset */
	ef10_nic_init,			/* eno_init */
	ef10_nic_get_vi_pool,		/* eno_get_vi_pool */
	ef10_nic_get_bar_region,	/* eno_get_bar_region */
	ef10_nic_hw_unavailable,	/* eno_hw_unavailable */
	ef10_nic_set_hw_unavailable,	/* eno_set_hw_unavailable */
#if EFSYS_OPT_DIAG
	ef10_nic_register_test,		/* eno_register_test */
#endif	/* EFSYS_OPT_DIAG */
	ef10_nic_fini,			/* eno_fini */
	ef10_nic_unprobe,		/* eno_unprobe */
};

#endif	/* EFSYS_OPT_MEDFORD4 */


	__checkReturn	efx_rc_t
efx_nic_create(
	__in		efx_family_t family,
	__in		efsys_identifier_t *esip,
	__in		efsys_bar_t *esbp,
	__in		uint32_t fcw_offset,
	__in		efsys_lock_t *eslp,
	__deref_out	efx_nic_t **enpp)
{
	efx_nic_t *enp;
	efx_rc_t rc;

	EFSYS_ASSERT3U(family, >, EFX_FAMILY_INVALID);
	EFSYS_ASSERT3U(family, <, EFX_FAMILY_NTYPES);

	/* Allocate a NIC object */
	EFSYS_KMEM_ALLOC(esip, sizeof (efx_nic_t), enp);

	if (enp == NULL) {
		rc = ENOMEM;
		goto fail1;
	}

	enp->en_magic = EFX_NIC_MAGIC;

	switch (family) {
#if EFSYS_OPT_SIENA
	case EFX_FAMILY_SIENA:
		enp->en_enop = &__efx_nic_siena_ops;
		enp->en_features =
		    EFX_FEATURE_IPV6 |
		    EFX_FEATURE_LFSR_HASH_INSERT |
		    EFX_FEATURE_LINK_EVENTS |
		    EFX_FEATURE_PERIODIC_MAC_STATS |
		    EFX_FEATURE_MCDI |
		    EFX_FEATURE_LOOKAHEAD_SPLIT |
		    EFX_FEATURE_MAC_HEADER_FILTERS |
		    EFX_FEATURE_TX_SRC_FILTERS;
		break;
#endif	/* EFSYS_OPT_SIENA */

#if EFSYS_OPT_HUNTINGTON
	case EFX_FAMILY_HUNTINGTON:
		enp->en_enop = &__efx_nic_hunt_ops;
		enp->en_features =
		    EFX_FEATURE_IPV6 |
		    EFX_FEATURE_LINK_EVENTS |
		    EFX_FEATURE_PERIODIC_MAC_STATS |
		    EFX_FEATURE_MCDI |
		    EFX_FEATURE_MAC_HEADER_FILTERS |
		    EFX_FEATURE_MCDI_DMA |
		    EFX_FEATURE_PIO_BUFFERS |
		    EFX_FEATURE_FW_ASSISTED_TSO |
		    EFX_FEATURE_FW_ASSISTED_TSO_V2 |
		    EFX_FEATURE_PACKED_STREAM |
		    EFX_FEATURE_TXQ_CKSUM_OP_DESC;
		break;
#endif	/* EFSYS_OPT_HUNTINGTON */

#if EFSYS_OPT_MEDFORD
	case EFX_FAMILY_MEDFORD:
		enp->en_enop = &__efx_nic_medford_ops;
		/*
		 * FW_ASSISTED_TSO omitted as Medford only supports firmware
		 * assisted TSO version 2, not the v1 scheme used on Huntington.
		 */
		enp->en_features =
		    EFX_FEATURE_IPV6 |
		    EFX_FEATURE_LINK_EVENTS |
		    EFX_FEATURE_PERIODIC_MAC_STATS |
		    EFX_FEATURE_MCDI |
		    EFX_FEATURE_MAC_HEADER_FILTERS |
		    EFX_FEATURE_MCDI_DMA |
		    EFX_FEATURE_PIO_BUFFERS |
		    EFX_FEATURE_FW_ASSISTED_TSO_V2 |
		    EFX_FEATURE_PACKED_STREAM |
		    EFX_FEATURE_TXQ_CKSUM_OP_DESC;
		break;
#endif	/* EFSYS_OPT_MEDFORD */

#if EFSYS_OPT_MEDFORD2
	case EFX_FAMILY_MEDFORD2:
		enp->en_enop = &__efx_nic_medford2_ops;
		enp->en_features =
		    EFX_FEATURE_IPV6 |
		    EFX_FEATURE_LINK_EVENTS |
		    EFX_FEATURE_PERIODIC_MAC_STATS |
		    EFX_FEATURE_MCDI |
		    EFX_FEATURE_MAC_HEADER_FILTERS |
		    EFX_FEATURE_MCDI_DMA |
		    EFX_FEATURE_PIO_BUFFERS |
		    EFX_FEATURE_FW_ASSISTED_TSO_V2 |
		    EFX_FEATURE_PACKED_STREAM |
		    EFX_FEATURE_TXQ_CKSUM_OP_DESC;
		break;
#endif	/* EFSYS_OPT_MEDFORD2 */

#if EFSYS_OPT_RIVERHEAD
	case EFX_FAMILY_RIVERHEAD:
		enp->en_enop = &__efx_nic_riverhead_ops;
		enp->en_features =
		    EFX_FEATURE_IPV6 |
		    EFX_FEATURE_LINK_EVENTS |
		    EFX_FEATURE_PERIODIC_MAC_STATS |
		    EFX_FEATURE_MCDI |
		    EFX_FEATURE_MAC_HEADER_FILTERS |
		    EFX_FEATURE_MCDI_DMA;
		enp->en_arch.ef10.ena_fcw_base = fcw_offset;
		break;
#endif	/* EFSYS_OPT_RIVERHEAD */

#if EFSYS_OPT_MEDFORD4
	case EFX_FAMILY_MEDFORD4:
		enp->en_enop = &__efx_nic_medford4_ops;
		enp->en_features =
		    EFX_FEATURE_IPV6 |
		    EFX_FEATURE_LINK_EVENTS |
		    EFX_FEATURE_PERIODIC_MAC_STATS |
		    EFX_FEATURE_MCDI |
		    EFX_FEATURE_MAC_HEADER_FILTERS |
		    EFX_FEATURE_MCDI_DMA |
		    EFX_FEATURE_FW_ASSISTED_TSO_V2 |
		    EFX_FEATURE_PACKED_STREAM |
		    EFX_FEATURE_TXQ_CKSUM_OP_DESC;
		break;
#endif	/* EFSYS_OPT_MEDFORD4 */

	default:
		rc = ENOTSUP;
		goto fail2;
	}

	if ((family != EFX_FAMILY_RIVERHEAD) && (fcw_offset != 0)) {
		rc = EINVAL;
		goto fail3;
	}

	enp->en_family = family;
	enp->en_esip = esip;
	enp->en_esbp = esbp;
	enp->en_eslp = eslp;

	*enpp = enp;

	return (0);

fail3:
	EFSYS_PROBE(fail3);
fail2:
	EFSYS_PROBE(fail2);

	enp->en_magic = 0;

	/* Free the NIC object */
	EFSYS_KMEM_FREE(esip, sizeof (efx_nic_t), enp);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

	__checkReturn	efx_rc_t
efx_nic_probe(
	__in		efx_nic_t *enp,
	__in		efx_fw_variant_t efv)
{
	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
	const efx_nic_ops_t *enop;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
#if EFSYS_OPT_MCDI
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
#endif	/* EFSYS_OPT_MCDI */
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_PROBE));

	/* Ensure FW variant codes match with MC_CMD_FW codes */
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_FULL_FEATURED ==
	    MC_CMD_FW_FULL_FEATURED);
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_LOW_LATENCY ==
	    MC_CMD_FW_LOW_LATENCY);
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_PACKED_STREAM ==
	    MC_CMD_FW_PACKED_STREAM);
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_HIGH_TX_RATE ==
	    MC_CMD_FW_HIGH_TX_RATE);
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_PACKED_STREAM_HASH_MODE_1 ==
	    MC_CMD_FW_PACKED_STREAM_HASH_MODE_1);
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_RULES_ENGINE ==
	    MC_CMD_FW_RULES_ENGINE);
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_DPDK ==
	    MC_CMD_FW_DPDK);
	EFX_STATIC_ASSERT(EFX_FW_VARIANT_DONT_CARE ==
	    (int)MC_CMD_FW_DONT_CARE);

	enop = enp->en_enop;
	enp->efv = efv;

	if ((rc = enop->eno_probe(enp)) != 0)
		goto fail1;

	encp->enc_features = enp->en_features;

	encp->enc_mac_pdu_max = efx_mac_pdu_from_sdu(enp, EFX_MAC_SDU_MAX);
	encp->enc_mac_pdu_min = EFX_MAC_PDU_MIN;

	if (efx_np_supported(enp) == B_FALSE)
		encp->enc_link_ev_need_poll = B_FALSE;
	else
		encp->enc_link_ev_need_poll = B_TRUE;

	if ((rc = efx_phy_probe(enp)) != 0)
		goto fail2;

	enp->en_mod_flags |= EFX_MOD_PROBE;

	return (0);

fail2:
	EFSYS_PROBE(fail2);

	enop->eno_unprobe(enp);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

	__checkReturn	efx_rc_t
efx_nic_set_drv_limits(
	__inout		efx_nic_t *enp,
	__in		efx_drv_limits_t *edlp)
{
	const efx_nic_ops_t *enop = enp->en_enop;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);

	if (enop->eno_set_drv_limits != NULL) {
		if ((rc = enop->eno_set_drv_limits(enp, edlp)) != 0)
			goto fail1;
	}

	return (0);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

	__checkReturn	efx_rc_t
efx_nic_set_drv_version(
	__inout			efx_nic_t *enp,
	__in_ecount(length)	char const *verp,
	__in			size_t length)
{
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_PROBE));

	/*
	 * length is the string content length in bytes.
	 * Accept any content which fits into the version
	 * buffer, excluding the last byte. This is reserved
	 * for an appended NUL terminator.
	 */
	if (length >= sizeof (enp->en_drv_version)) {
		rc = E2BIG;
		goto fail1;
	}

	(void) memset(enp->en_drv_version, 0,
	    sizeof (enp->en_drv_version));
	memcpy(enp->en_drv_version, verp, length);

	return (0);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}


	__checkReturn	efx_rc_t
efx_nic_get_bar_region(
	__in		efx_nic_t *enp,
	__in		efx_nic_region_t region,
	__out		uint32_t *offsetp,
	__out		size_t *sizep)
{
	const efx_nic_ops_t *enop = enp->en_enop;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);

	if (enop->eno_get_bar_region == NULL) {
		rc = ENOTSUP;
		goto fail1;
	}
	if ((rc = (enop->eno_get_bar_region)(enp,
		    region, offsetp, sizep)) != 0) {
		goto fail2;
	}

	return (0);

fail2:
	EFSYS_PROBE(fail2);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}


	__checkReturn	efx_rc_t
efx_nic_get_vi_pool(
	__in		efx_nic_t *enp,
	__out		uint32_t *evq_countp,
	__out		uint32_t *rxq_countp,
	__out		uint32_t *txq_countp)
{
	const efx_nic_ops_t *enop = enp->en_enop;
	efx_nic_cfg_t *encp = &enp->en_nic_cfg;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);

	if (enop->eno_get_vi_pool != NULL) {
		uint32_t vi_count = 0;

		if ((rc = (enop->eno_get_vi_pool)(enp, &vi_count)) != 0)
			goto fail1;

		*evq_countp = vi_count;
		*rxq_countp = vi_count;
		*txq_countp = vi_count;
	} else {
		/* Use NIC limits as default value */
		*evq_countp = encp->enc_evq_limit;
		*rxq_countp = encp->enc_rxq_limit;
		*txq_countp = encp->enc_txq_limit;
	}

	return (0);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}


	__checkReturn	efx_rc_t
efx_nic_init(
	__in		efx_nic_t *enp)
{
	const efx_nic_ops_t *enop = enp->en_enop;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);

	if (enp->en_mod_flags & EFX_MOD_NIC) {
		rc = EINVAL;
		goto fail1;
	}

	if ((rc = enop->eno_init(enp)) != 0)
		goto fail2;

	enp->en_mod_flags |= EFX_MOD_NIC;

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

			void
efx_nic_fini(
	__in		efx_nic_t *enp)
{
	const efx_nic_ops_t *enop = enp->en_enop;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT(enp->en_mod_flags & EFX_MOD_PROBE);
	EFSYS_ASSERT(enp->en_mod_flags & EFX_MOD_NIC);
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_INTR));
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_EV));
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_RX));
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_TX));

	enop->eno_fini(enp);

	enp->en_mod_flags &= ~EFX_MOD_NIC;
}

			void
efx_nic_unprobe(
	__in		efx_nic_t *enp)
{
	const efx_nic_ops_t *enop = enp->en_enop;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
#if EFSYS_OPT_MCDI
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
#endif	/* EFSYS_OPT_MCDI */
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_NIC));
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_INTR));
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_EV));
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_RX));
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_TX));

	efx_phy_unprobe(enp);

	enop->eno_unprobe(enp);

	enp->en_mod_flags &= ~EFX_MOD_PROBE;
}

			void
efx_nic_destroy(
	__in	efx_nic_t *enp)
{
	efsys_identifier_t *esip = enp->en_esip;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT3U(enp->en_mod_flags, ==, 0);

	enp->en_family = EFX_FAMILY_INVALID;
	enp->en_esip = NULL;
	enp->en_esbp = NULL;
	enp->en_eslp = NULL;

	enp->en_enop = NULL;

	enp->en_magic = 0;

	/* Free the NIC object */
	EFSYS_KMEM_FREE(esip, sizeof (efx_nic_t), enp);
}

	__checkReturn	efx_rc_t
efx_nic_reset(
	__in		efx_nic_t *enp)
{
	const efx_nic_ops_t *enop = enp->en_enop;
	unsigned int mod_flags;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT(enp->en_mod_flags & EFX_MOD_PROBE);
	/*
	 * All modules except the MCDI, PROBE, NVRAM, VPD, MON, TUNNEL
	 * (which we do not reset here) must have been shut down or never
	 * initialized.
	 *
	 * A rule of thumb here is: If the controller or MC reboots, is *any*
	 * state lost. If it's lost and needs reapplying, then the module
	 * *must* not be initialised during the reset.
	 */
	mod_flags = enp->en_mod_flags;
	mod_flags &= ~(EFX_MOD_MCDI | EFX_MOD_PROBE | EFX_MOD_NVRAM |
	    EFX_MOD_VPD | EFX_MOD_MON);
#if EFSYS_OPT_TUNNEL
	mod_flags &= ~EFX_MOD_TUNNEL;
#endif /* EFSYS_OPT_TUNNEL */
	EFSYS_ASSERT3U(mod_flags, ==, 0);
	if (mod_flags != 0) {
		rc = EINVAL;
		goto fail1;
	}

	if ((rc = enop->eno_reset(enp)) != 0)
		goto fail2;

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

			const efx_nic_cfg_t *
efx_nic_cfg_get(
	__in		const efx_nic_t *enp)
{
	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);

	return (&(enp->en_nic_cfg));
}

	__checkReturn		efx_rc_t
efx_nic_get_fw_version(
	__in			efx_nic_t *enp,
	__out			efx_nic_fw_info_t *enfip)
{
	uint16_t mc_fw_version[4];
	efx_rc_t rc;

	if (enfip == NULL) {
		rc = EINVAL;
		goto fail1;
	}

	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
	EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);

	/* Ensure RXDP_FW_ID codes match with MC_CMD_GET_CAPABILITIES codes */
	EFX_STATIC_ASSERT(EFX_RXDP_FULL_FEATURED_FW_ID ==
	    MC_CMD_GET_CAPABILITIES_OUT_RXDP);
	EFX_STATIC_ASSERT(EFX_RXDP_LOW_LATENCY_FW_ID ==
	    MC_CMD_GET_CAPABILITIES_OUT_RXDP_LOW_LATENCY);
	EFX_STATIC_ASSERT(EFX_RXDP_PACKED_STREAM_FW_ID ==
	    MC_CMD_GET_CAPABILITIES_OUT_RXDP_PACKED_STREAM);
	EFX_STATIC_ASSERT(EFX_RXDP_RULES_ENGINE_FW_ID ==
	    MC_CMD_GET_CAPABILITIES_OUT_RXDP_RULES_ENGINE);
	EFX_STATIC_ASSERT(EFX_RXDP_DPDK_FW_ID ==
	    MC_CMD_GET_CAPABILITIES_OUT_RXDP_DPDK);

	rc = efx_mcdi_version(enp, mc_fw_version, NULL, NULL);
	if (rc != 0)
		goto fail2;

	rc = efx_mcdi_get_capabilities(enp, NULL,
	    &enfip->enfi_rx_dpcpu_fw_id,
	    &enfip->enfi_tx_dpcpu_fw_id,
	    NULL, NULL);
	if (rc == 0) {
		enfip->enfi_dpcpu_fw_ids_valid = B_TRUE;
	} else if (rc == ENOTSUP) {
		enfip->enfi_dpcpu_fw_ids_valid = B_FALSE;
		enfip->enfi_rx_dpcpu_fw_id = 0;
		enfip->enfi_tx_dpcpu_fw_id = 0;
	} else {
		goto fail3;
	}

	memcpy(enfip->enfi_mc_fw_version, mc_fw_version,
	    sizeof (mc_fw_version));

	return (0);

fail3:
	EFSYS_PROBE(fail3);
fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

	__checkReturn	efx_rc_t
efx_nic_get_board_info(
	__in		efx_nic_t *enp,
	__out		efx_nic_board_info_t *board_infop)
{
	efx_mcdi_version_t ver;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
	EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);

	rc = efx_mcdi_get_version(enp, EFX_MCDI_VERSION_BOARD_INFO, &ver);
	if (rc == EMSGSIZE) {
		/*
		 * Typically, EMSGSIZE is returned by above call in the
		 * case when the NIC does not provide extra information.
		 */
		rc = ENOTSUP;
		goto fail1;
	} else if (rc != 0) {
		goto fail2;
	}

	if ((ver.emv_flags & EFX_MCDI_VERSION_BOARD_INFO) == 0) {
		rc = ENOTSUP;
		goto fail3;
	}

	memcpy(board_infop, &ver.emv_board_info, sizeof (*board_infop));

	/* MCDI should provide NUL-terminated strings, but stay vigilant. */
	board_infop->enbi_serial[sizeof (board_infop->enbi_serial) - 1] = '\0';
	board_infop->enbi_name[sizeof (board_infop->enbi_name) - 1] = '\0';

	return (0);

fail3:
	EFSYS_PROBE(fail3);
fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

	__checkReturn	boolean_t
efx_nic_hw_unavailable(
	__in		efx_nic_t *enp)
{
	const efx_nic_ops_t *enop = enp->en_enop;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	/* NOTE: can be used by MCDI before NIC probe */

	if (enop->eno_hw_unavailable != NULL) {
		if ((enop->eno_hw_unavailable)(enp) != B_FALSE)
			goto unavail;
	}

	return (B_FALSE);

unavail:
	return (B_TRUE);
}

			void
efx_nic_set_hw_unavailable(
	__in		efx_nic_t *enp)
{
	const efx_nic_ops_t *enop = enp->en_enop;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);

	if (enop->eno_set_hw_unavailable != NULL)
		enop->eno_set_hw_unavailable(enp);
}


#if EFSYS_OPT_DIAG

	__checkReturn	efx_rc_t
efx_nic_register_test(
	__in		efx_nic_t *enp)
{
	const efx_nic_ops_t *enop = enp->en_enop;
	efx_rc_t rc;

	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
	EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_NIC));

	if ((rc = enop->eno_register_test(enp)) != 0)
		goto fail1;

	return (0);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

#endif	/* EFSYS_OPT_DIAG */

#if EFSYS_OPT_LOOPBACK

extern			void
efx_loopback_mask(
	__in	efx_loopback_kind_t loopback_kind,
	__out	efx_qword_t *maskp)
{
	efx_qword_t mask;

	EFSYS_ASSERT3U(loopback_kind, <, EFX_LOOPBACK_NKINDS);
	EFSYS_ASSERT(maskp != NULL);

	/* Assert the MC_CMD_LOOPBACK and EFX_LOOPBACK namespaces agree */
#define	LOOPBACK_CHECK(_mcdi, _efx) \
	EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_##_mcdi == EFX_LOOPBACK_##_efx)

	LOOPBACK_CHECK(NONE, OFF);
	LOOPBACK_CHECK(DATA, DATA);
	LOOPBACK_CHECK(GMAC, GMAC);
	LOOPBACK_CHECK(XGMII, XGMII);
	LOOPBACK_CHECK(XGXS, XGXS);
	LOOPBACK_CHECK(XAUI, XAUI);
	LOOPBACK_CHECK(GMII, GMII);
	LOOPBACK_CHECK(SGMII, SGMII);
	LOOPBACK_CHECK(XGBR, XGBR);
	LOOPBACK_CHECK(XFI, XFI);
	LOOPBACK_CHECK(XAUI_FAR, XAUI_FAR);
	LOOPBACK_CHECK(GMII_FAR, GMII_FAR);
	LOOPBACK_CHECK(SGMII_FAR, SGMII_FAR);
	LOOPBACK_CHECK(XFI_FAR, XFI_FAR);
	LOOPBACK_CHECK(GPHY, GPHY);
	LOOPBACK_CHECK(PHYXS, PHY_XS);
	LOOPBACK_CHECK(PCS, PCS);
	LOOPBACK_CHECK(PMAPMD, PMA_PMD);
	LOOPBACK_CHECK(XPORT, XPORT);
	LOOPBACK_CHECK(XGMII_WS, XGMII_WS);
	LOOPBACK_CHECK(XAUI_WS, XAUI_WS);
	LOOPBACK_CHECK(XAUI_WS_FAR, XAUI_WS_FAR);
	LOOPBACK_CHECK(XAUI_WS_NEAR, XAUI_WS_NEAR);
	LOOPBACK_CHECK(GMII_WS, GMII_WS);
	LOOPBACK_CHECK(XFI_WS, XFI_WS);
	LOOPBACK_CHECK(XFI_WS_FAR, XFI_WS_FAR);
	LOOPBACK_CHECK(PHYXS_WS, PHYXS_WS);
	LOOPBACK_CHECK(PMA_INT, PMA_INT);
	LOOPBACK_CHECK(SD_NEAR, SD_NEAR);
	LOOPBACK_CHECK(SD_FAR, SD_FAR);
	LOOPBACK_CHECK(PMA_INT_WS, PMA_INT_WS);
	LOOPBACK_CHECK(SD_FEP2_WS, SD_FEP2_WS);
	LOOPBACK_CHECK(SD_FEP1_5_WS, SD_FEP1_5_WS);
	LOOPBACK_CHECK(SD_FEP_WS, SD_FEP_WS);
	LOOPBACK_CHECK(SD_FES_WS, SD_FES_WS);
	LOOPBACK_CHECK(AOE_INT_NEAR, AOE_INT_NEAR);
	LOOPBACK_CHECK(DATA_WS, DATA_WS);
	LOOPBACK_CHECK(FORCE_EXT_LINK, FORCE_EXT_LINK);
#undef LOOPBACK_CHECK

	/* Build bitmask of possible loopback types */
	EFX_ZERO_QWORD(mask);

	if ((loopback_kind == EFX_LOOPBACK_KIND_OFF) ||
	    (loopback_kind == EFX_LOOPBACK_KIND_ALL)) {
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_OFF);
	}

	if ((loopback_kind == EFX_LOOPBACK_KIND_MAC) ||
	    (loopback_kind == EFX_LOOPBACK_KIND_ALL)) {
		/*
		 * The "MAC" grouping has historically been used by drivers to
		 * mean loopbacks supported by on-chip hardware. Keep that
		 * meaning here, and include on-chip PHY layer loopbacks.
		 */
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_DATA);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_GMAC);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_XGMII);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_XGXS);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_XAUI);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_GMII);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_SGMII);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_XGBR);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_XFI);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_XAUI_FAR);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_GMII_FAR);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_SGMII_FAR);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_XFI_FAR);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_PMA_INT);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_SD_NEAR);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_SD_FAR);
	}

	if ((loopback_kind == EFX_LOOPBACK_KIND_PHY) ||
	    (loopback_kind == EFX_LOOPBACK_KIND_ALL)) {
		/*
		 * The "PHY" grouping has historically been used by drivers to
		 * mean loopbacks supported by off-chip hardware. Keep that
		 * meaning here.
		 */
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_GPHY);
		EFX_SET_QWORD_BIT(mask,	EFX_LOOPBACK_PHY_XS);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_PCS);
		EFX_SET_QWORD_BIT(mask, EFX_LOOPBACK_PMA_PMD);
	}

	*maskp = mask;
}

	__checkReturn	efx_rc_t
efx_mcdi_get_loopback_modes(
	__in		efx_nic_t *enp)
{
	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
	efx_mcdi_req_t req;
	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_GET_LOOPBACK_MODES_IN_LEN,
		MC_CMD_GET_LOOPBACK_MODES_OUT_V2_LEN);
	efx_qword_t mask;
	efx_qword_t modes;
	efx_rc_t rc;

	req.emr_cmd = MC_CMD_GET_LOOPBACK_MODES;
	req.emr_in_buf = payload;
	req.emr_in_length = MC_CMD_GET_LOOPBACK_MODES_IN_LEN;
	req.emr_out_buf = payload;
	req.emr_out_length = MC_CMD_GET_LOOPBACK_MODES_OUT_V2_LEN;

	efx_mcdi_execute(enp, &req);

	if (req.emr_rc != 0) {
		rc = req.emr_rc;
		goto fail1;
	}

	if (req.emr_out_length_used <
	    MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST +
	    MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN) {
		rc = EMSGSIZE;
		goto fail2;
	}

	/*
	 * We assert the MC_CMD_LOOPBACK and EFX_LOOPBACK namespaces agree
	 * in efx_loopback_mask() and in siena_phy.c:siena_phy_get_link().
	 */
	efx_loopback_mask(EFX_LOOPBACK_KIND_ALL, &mask);

	EFX_AND_QWORD(mask,
	    *MCDI_OUT2(req, efx_qword_t, GET_LOOPBACK_MODES_OUT_SUGGESTED));

	modes = *MCDI_OUT2(req, efx_qword_t, GET_LOOPBACK_MODES_OUT_100M);
	EFX_AND_QWORD(modes, mask);
	encp->enc_loopback_types[EFX_LINK_100FDX] = modes;

	modes = *MCDI_OUT2(req, efx_qword_t, GET_LOOPBACK_MODES_OUT_1G);
	EFX_AND_QWORD(modes, mask);
	encp->enc_loopback_types[EFX_LINK_1000FDX] = modes;

	modes = *MCDI_OUT2(req, efx_qword_t, GET_LOOPBACK_MODES_OUT_10G);
	EFX_AND_QWORD(modes, mask);
	encp->enc_loopback_types[EFX_LINK_10000FDX] = modes;

	if (req.emr_out_length_used >=
	    MC_CMD_GET_LOOPBACK_MODES_OUT_40G_OFST +
	    MC_CMD_GET_LOOPBACK_MODES_OUT_40G_LEN) {
		/* Response includes 40G loopback modes */
		modes = *MCDI_OUT2(req, efx_qword_t,
		    GET_LOOPBACK_MODES_OUT_40G);
		EFX_AND_QWORD(modes, mask);
		encp->enc_loopback_types[EFX_LINK_40000FDX] = modes;
	}

	if (req.emr_out_length_used >=
	    MC_CMD_GET_LOOPBACK_MODES_OUT_V2_25G_OFST +
	    MC_CMD_GET_LOOPBACK_MODES_OUT_V2_25G_LEN) {
		/* Response includes 25G loopback modes */
		modes = *MCDI_OUT2(req, efx_qword_t,
		    GET_LOOPBACK_MODES_OUT_V2_25G);
		EFX_AND_QWORD(modes, mask);
		encp->enc_loopback_types[EFX_LINK_25000FDX] = modes;
	}

	if (req.emr_out_length_used >=
	    MC_CMD_GET_LOOPBACK_MODES_OUT_V2_50G_OFST +
	    MC_CMD_GET_LOOPBACK_MODES_OUT_V2_50G_LEN) {
		/* Response includes 50G loopback modes */
		modes = *MCDI_OUT2(req, efx_qword_t,
		    GET_LOOPBACK_MODES_OUT_V2_50G);
		EFX_AND_QWORD(modes, mask);
		encp->enc_loopback_types[EFX_LINK_50000FDX] = modes;
	}

	if (req.emr_out_length_used >=
	    MC_CMD_GET_LOOPBACK_MODES_OUT_V2_100G_OFST +
	    MC_CMD_GET_LOOPBACK_MODES_OUT_V2_100G_LEN) {
		/* Response includes 100G loopback modes */
		modes = *MCDI_OUT2(req, efx_qword_t,
		    GET_LOOPBACK_MODES_OUT_V2_100G);
		EFX_AND_QWORD(modes, mask);
		encp->enc_loopback_types[EFX_LINK_100000FDX] = modes;
	}

	EFX_ZERO_QWORD(modes);
	EFX_SET_QWORD_BIT(modes, EFX_LOOPBACK_OFF);
	EFX_OR_QWORD(modes, encp->enc_loopback_types[EFX_LINK_100FDX]);
	EFX_OR_QWORD(modes, encp->enc_loopback_types[EFX_LINK_1000FDX]);
	EFX_OR_QWORD(modes, encp->enc_loopback_types[EFX_LINK_10000FDX]);
	EFX_OR_QWORD(modes, encp->enc_loopback_types[EFX_LINK_40000FDX]);
	EFX_OR_QWORD(modes, encp->enc_loopback_types[EFX_LINK_25000FDX]);
	EFX_OR_QWORD(modes, encp->enc_loopback_types[EFX_LINK_50000FDX]);
	EFX_OR_QWORD(modes, encp->enc_loopback_types[EFX_LINK_100000FDX]);
	encp->enc_loopback_types[EFX_LINK_UNKNOWN] = modes;

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

#endif /* EFSYS_OPT_LOOPBACK */

	__checkReturn	efx_rc_t
efx_nic_calculate_pcie_link_bandwidth(
	__in		uint32_t pcie_link_width,
	__in		uint32_t pcie_link_gen,
	__out		uint32_t *bandwidth_mbpsp)
{
	uint32_t lane_bandwidth;
	uint32_t total_bandwidth;
	efx_rc_t rc;

	if ((pcie_link_width == 0) || (pcie_link_width > 16) ||
	    !ISP2(pcie_link_width)) {
		rc = EINVAL;
		goto fail1;
	}

	switch (pcie_link_gen) {
	case EFX_PCIE_LINK_SPEED_GEN1:
		/* 2.5 Gb/s raw bandwidth with 8b/10b encoding */
		lane_bandwidth = 2000;
		break;
	case EFX_PCIE_LINK_SPEED_GEN2:
		/* 5.0 Gb/s raw bandwidth with 8b/10b encoding */
		lane_bandwidth = 4000;
		break;
	case EFX_PCIE_LINK_SPEED_GEN3:
		/* 8.0 Gb/s raw bandwidth with 128b/130b encoding */
		lane_bandwidth = 7877;
		break;
	default:
		rc = EINVAL;
		goto fail2;
	}

	total_bandwidth = lane_bandwidth * pcie_link_width;
	*bandwidth_mbpsp = total_bandwidth;

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

#if EFSYS_OPT_FW_SUBVARIANT_AWARE

	__checkReturn	efx_rc_t
efx_nic_get_fw_subvariant(
	__in		efx_nic_t *enp,
	__out		efx_nic_fw_subvariant_t *subvariantp)
{
	efx_rc_t rc;
	uint32_t value;

	rc = efx_mcdi_get_nic_global(enp,
	    MC_CMD_SET_NIC_GLOBAL_IN_FIRMWARE_SUBVARIANT, &value);
	if (rc != 0)
		goto fail1;

	/* Mapping is not required since values match MCDI */
	EFX_STATIC_ASSERT(EFX_NIC_FW_SUBVARIANT_DEFAULT ==
	    MC_CMD_SET_NIC_GLOBAL_IN_FW_SUBVARIANT_DEFAULT);
	EFX_STATIC_ASSERT(EFX_NIC_FW_SUBVARIANT_NO_TX_CSUM ==
	    MC_CMD_SET_NIC_GLOBAL_IN_FW_SUBVARIANT_NO_TX_CSUM);

	switch (value) {
	case MC_CMD_SET_NIC_GLOBAL_IN_FW_SUBVARIANT_DEFAULT:
	case MC_CMD_SET_NIC_GLOBAL_IN_FW_SUBVARIANT_NO_TX_CSUM:
		*subvariantp = value;
		break;
	default:
		rc = EINVAL;
		goto fail2;
	}

	return (0);

fail2:
	EFSYS_PROBE(fail2);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

	__checkReturn	efx_rc_t
efx_nic_set_fw_subvariant(
	__in		efx_nic_t *enp,
	__in		efx_nic_fw_subvariant_t subvariant)
{
	efx_rc_t rc;

	switch (subvariant) {
	case EFX_NIC_FW_SUBVARIANT_DEFAULT:
	case EFX_NIC_FW_SUBVARIANT_NO_TX_CSUM:
		/* Mapping is not required since values match MCDI */
		break;
	default:
		rc = EINVAL;
		goto fail1;
	}

	rc = efx_mcdi_set_nic_global(enp,
	    MC_CMD_SET_NIC_GLOBAL_IN_FIRMWARE_SUBVARIANT, subvariant);
	if (rc != 0)
		goto fail2;

	return (0);

fail2:
	EFSYS_PROBE(fail2);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

#endif	/* EFSYS_OPT_FW_SUBVARIANT_AWARE */

	__checkReturn	efx_rc_t
efx_nic_check_pcie_link_speed(
	__in		efx_nic_t *enp,
	__in		uint32_t pcie_link_width,
	__in		uint32_t pcie_link_gen,
	__out		efx_pcie_link_performance_t *resultp)
{
	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
	uint32_t bandwidth;
	efx_pcie_link_performance_t result;
	efx_rc_t rc;

	if ((encp->enc_required_pcie_bandwidth_mbps == 0) ||
	    (pcie_link_width == 0) || (pcie_link_width == 32) ||
	    (pcie_link_gen == 0)) {
		/*
		 * No usable info on what is required and/or in use. In virtual
		 * machines, sometimes the PCIe link width is reported as 0 or
		 * 32, or the speed as 0.
		 */
		result = EFX_PCIE_LINK_PERFORMANCE_UNKNOWN_BANDWIDTH;
		goto out;
	}

	/* Calculate the available bandwidth in megabits per second */
	rc = efx_nic_calculate_pcie_link_bandwidth(pcie_link_width,
					    pcie_link_gen, &bandwidth);
	if (rc != 0)
		goto fail1;

	if (bandwidth < encp->enc_required_pcie_bandwidth_mbps) {
		result = EFX_PCIE_LINK_PERFORMANCE_SUBOPTIMAL_BANDWIDTH;
	} else if (pcie_link_gen < encp->enc_max_pcie_link_gen) {
		/* The link provides enough bandwidth but not optimal latency */
		result = EFX_PCIE_LINK_PERFORMANCE_SUBOPTIMAL_LATENCY;
	} else {
		result = EFX_PCIE_LINK_PERFORMANCE_OPTIMAL;
	}

out:
	*resultp = result;

	return (0);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

/* Required en_eslp lock held */
static __checkReturn	efx_rc_t
efx_nic_dma_config_regioned_find_region(
	__in		const efx_nic_t *enp,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out		const efx_nic_dma_region_t **regionp)
{
	const efx_nic_dma_region_info_t *region_info;
	const efx_nic_dma_region_t *region;
	unsigned int i;
	efx_rc_t rc;

	if (efx_nic_cfg_get(enp)->enc_dma_mapping !=
	    EFX_NIC_DMA_MAPPING_REGIONED) {
		rc = EINVAL;
		goto fail1;
	}

	region_info = &enp->en_dma.end_u.endu_region_info;

	for (i = 0; i < region_info->endri_count; ++i) {
		efsys_dma_addr_t offset;

		region = &region_info->endri_regions[i];
		if (region->endr_inuse == B_FALSE)
			continue;

		if (trgt_addr < region->endr_trgt_base)
			continue;

		EFSYS_ASSERT3U(region->endr_window_log2, <, 64);
		offset = trgt_addr - region->endr_trgt_base;
		if (offset + len > (1ULL << region->endr_window_log2))
			continue;

		*regionp = region;
		return (0);
	}

	rc = ENOENT;
	goto fail2;

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

static __checkReturn	efx_rc_t
efx_nic_dma_config_regioned_add_region(
	__in		efx_nic_t *enp,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out		const efx_nic_dma_region_t **regionp)
{
	efx_nic_dma_region_info_t *region_info;
	efx_nic_dma_region_t *region;
	unsigned int i;
	efx_rc_t rc;

	if (efx_nic_cfg_get(enp)->enc_dma_mapping !=
	    EFX_NIC_DMA_MAPPING_REGIONED) {
		rc = EINVAL;
		goto fail1;
	}

	region_info = &enp->en_dma.end_u.endu_region_info;

	for (i = 0; i < region_info->endri_count; ++i) {
		efsys_dma_addr_t trgt_base;
		efsys_dma_addr_t offset;

		region = &region_info->endri_regions[i];
		if (region->endr_inuse == B_TRUE)
			continue;

		/*
		 * Align target address base in accordance with
		 * the region requirements.
		 */
		EFSYS_ASSERT3U(region->endr_align_log2, <, 64);
		trgt_base = EFX_P2ALIGN(efsys_dma_addr_t, trgt_addr,
		    (1ULL << region->endr_align_log2));

		offset = trgt_addr - trgt_base;

		/* Check if region window is sufficient */
		EFSYS_ASSERT3U(region->endr_window_log2, <, 64);
		if (offset + len > (1ULL << region->endr_window_log2))
			continue;

		region->endr_trgt_base = trgt_base;
		region->endr_inuse = B_TRUE;

		*regionp = region;
		return (0);
	}

	/* No suitable free region found */
	rc = ENOMEM;
	goto fail2;

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

static	__checkReturn	efx_rc_t
efx_nic_dma_config_regioned_add(
	__in		efx_nic_t *enp,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out_opt	efsys_dma_addr_t *nic_basep,
	__out_opt	efsys_dma_addr_t *trgt_basep,
	__out_opt	size_t *map_lenp)
{
	const efx_nic_dma_region_t *region;
	efsys_lock_state_t state;
	efx_rc_t rc;

	EFSYS_LOCK(enp->en_eslp, state);

	rc = efx_nic_dma_config_regioned_find_region(enp, trgt_addr, len,
	    &region);
	switch (rc) {
	case 0:
		/* Already covered by existing mapping */
		break;
	case ENOENT:
		/* No existing mapping found */
		rc = efx_nic_dma_config_regioned_add_region(enp,
		    trgt_addr, len, &region);
		if (rc != 0)
			goto fail1;
		break;
	default:
		goto fail2;
	}

	if (nic_basep != NULL)
		*nic_basep = region->endr_nic_base;
	if (trgt_basep != NULL)
		*trgt_basep = region->endr_trgt_base;
	if (map_lenp != NULL)
		*map_lenp = 1ULL << region->endr_window_log2;

	EFSYS_UNLOCK(enp->en_eslp, state);

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	EFSYS_UNLOCK(enp->en_eslp, state);

	return (rc);
}

	 __checkReturn	efx_rc_t
efx_nic_dma_config_add(
	__in		efx_nic_t *enp,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out_opt	efsys_dma_addr_t *nic_basep,
	__out_opt	efsys_dma_addr_t *trgt_basep,
	__out_opt	size_t *map_lenp)
{
	const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
	efx_rc_t rc;

	switch (encp->enc_dma_mapping) {
	case EFX_NIC_DMA_MAPPING_FLAT:
		/* No mapping is required */
		if (nic_basep != NULL)
			*nic_basep = 0;
		if (trgt_basep != NULL)
			*trgt_basep = 0;
		if (map_lenp != NULL)
			*map_lenp = 0;
		break;
	case EFX_NIC_DMA_MAPPING_REGIONED:
		rc = efx_nic_dma_config_regioned_add(enp, trgt_addr, len,
		    nic_basep, trgt_basep, map_lenp);
		if (rc != 0)
			goto fail1;
		break;
	case EFX_NIC_DMA_MAPPING_UNKNOWN:
	default:
		rc = ENOTSUP;
		goto fail2;
	}

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

static	 __checkReturn	efx_rc_t
efx_nic_dma_reconfigure_regioned(
	__in		efx_nic_t *enp)
{
	efx_rc_t rc;

	rc = efx_mcdi_set_nic_addr_regions(enp,
	    &enp->en_dma.end_u.endu_region_info);
	if (rc != 0)
		goto fail1;

	return (0);

fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);

}

	 __checkReturn	efx_rc_t
efx_nic_dma_reconfigure(
	__in		efx_nic_t *enp)
{
	const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
	efx_rc_t rc;

	switch (encp->enc_dma_mapping) {
	case EFX_NIC_DMA_MAPPING_UNKNOWN:
	case EFX_NIC_DMA_MAPPING_FLAT:
		/* Nothing to do */
		break;
	case EFX_NIC_DMA_MAPPING_REGIONED:
		rc = efx_nic_dma_reconfigure_regioned(enp);
		if (rc != 0)
			goto fail1;
		break;
	default:
		rc = ENOTSUP;
		goto fail2;
	}

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

static __checkReturn	efx_rc_t
efx_nic_dma_unknown_map(
	__in		efx_nic_t *enp,
	__in		efx_nic_dma_addr_type_t addr_type,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out		efsys_dma_addr_t *nic_addrp)
{
	efx_rc_t rc;

	/* This function may be called before the NIC has been probed. */
	if (enp->en_mod_flags & EFX_MOD_PROBE) {
		EFSYS_ASSERT3U(efx_nic_cfg_get(enp)->enc_dma_mapping, ==,
		    EFX_NIC_DMA_MAPPING_UNKNOWN);
	}

	switch (addr_type) {
	case EFX_NIC_DMA_ADDR_MCDI_BUF:
		/*
		 * MC cares about MCDI buffer mapping itself since it cannot
		 * be really mapped using MCDI because mapped MCDI
		 * buffer is required to execute MCDI commands.
		 */
		*nic_addrp = trgt_addr;
		break;

	case EFX_NIC_DMA_ADDR_MAC_STATS_BUF:
	case EFX_NIC_DMA_ADDR_EVENT_RING:
	case EFX_NIC_DMA_ADDR_RX_RING:
	case EFX_NIC_DMA_ADDR_TX_RING:
	case EFX_NIC_DMA_ADDR_RX_BUF:
	case EFX_NIC_DMA_ADDR_TX_BUF:
		/* Mapping type must be discovered first */
		rc = EFAULT;
		goto fail1;

	default:
		rc = EINVAL;
		goto fail2;
	}

	return (0);

fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

static __checkReturn	efx_rc_t
efx_nic_dma_flat_map(
	__in		efx_nic_t *enp,
	__in		efx_nic_dma_addr_type_t addr_type,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out		efsys_dma_addr_t *nic_addrp)
{
	_NOTE(ARGUNUSED(addr_type, len))

	EFSYS_ASSERT3U(efx_nic_cfg_get(enp)->enc_dma_mapping, ==,
	    EFX_NIC_DMA_MAPPING_FLAT);

	/* No re-mapping is required */
	*nic_addrp = trgt_addr;

	return (0);
}

static __checkReturn	efx_rc_t
efx_nic_dma_regioned_map(
	__in		efx_nic_t *enp,
	__in		efx_nic_dma_addr_type_t addr_type,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out		efsys_dma_addr_t *nic_addrp)
{
	const efx_nic_dma_region_t *region;
	efsys_lock_state_t state;
	efx_rc_t rc;

	if (efx_nic_cfg_get(enp)->enc_dma_mapping !=
	    EFX_NIC_DMA_MAPPING_REGIONED) {
		rc = EINVAL;
		goto fail1;
	}

	switch (addr_type) {
	case EFX_NIC_DMA_ADDR_MCDI_BUF:
	case EFX_NIC_DMA_ADDR_MAC_STATS_BUF:
		/*
		 * MC cares about MCDI buffer mapping itself since it cannot
		 * be really mapped using MCDI because mapped MCDI buffer is
		 * required to execute MCDI commands. It is not a problem
		 * for MAC stats buffer, but since MC can care about mapping
		 * itself, it may be done for MAC stats buffer as well.
		 */
		*nic_addrp = trgt_addr;
		goto out;

	case EFX_NIC_DMA_ADDR_EVENT_RING:
	case EFX_NIC_DMA_ADDR_RX_RING:
	case EFX_NIC_DMA_ADDR_TX_RING:
	case EFX_NIC_DMA_ADDR_RX_BUF:
	case EFX_NIC_DMA_ADDR_TX_BUF:
		/* Rings and buffer addresses should be mapped */
		break;

	default:
		rc = EINVAL;
		goto fail2;
	}

	EFSYS_LOCK(enp->en_eslp, state);

	rc = efx_nic_dma_config_regioned_find_region(enp, trgt_addr, len,
	    &region);
	if (rc != 0)
		goto fail3;

	*nic_addrp = region->endr_nic_base +
		(trgt_addr - region->endr_trgt_base);

	EFSYS_UNLOCK(enp->en_eslp, state);

out:
	return (0);

fail3:
	EFSYS_PROBE(fail3);
	EFSYS_UNLOCK(enp->en_eslp, state);
fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}

	__checkReturn	efx_rc_t
efx_nic_dma_map(
	__in		efx_nic_t *enp,
	__in		efx_nic_dma_addr_type_t addr_type,
	__in		efsys_dma_addr_t trgt_addr,
	__in		size_t len,
	__out		efsys_dma_addr_t *nic_addrp)
{
	efx_nic_dma_mapping_t mapping;
	efx_rc_t rc;

	/*
	 * We cannot check configuration of a NIC that hasn't been probed.
	 * Use EFX_NIC_DMA_MAPPING_UNKNOWN by default.
	 */
	if ((enp->en_mod_flags & EFX_MOD_PROBE) == 0)
		mapping = EFX_NIC_DMA_MAPPING_UNKNOWN;
	else
		mapping = efx_nic_cfg_get(enp)->enc_dma_mapping;

	switch (mapping) {
	case EFX_NIC_DMA_MAPPING_UNKNOWN:
		rc = efx_nic_dma_unknown_map(enp, addr_type, trgt_addr,
		    len, nic_addrp);
		if (rc != 0)
			goto fail1;
		break;
	case EFX_NIC_DMA_MAPPING_FLAT:
		rc = efx_nic_dma_flat_map(enp, addr_type, trgt_addr,
		    len, nic_addrp);
		if (rc != 0)
			goto fail2;
		break;
	case EFX_NIC_DMA_MAPPING_REGIONED:
		rc = efx_nic_dma_regioned_map(enp, addr_type, trgt_addr,
		    len, nic_addrp);
		if (rc != 0)
			goto fail3;
		break;
	default:
		rc = ENOTSUP;
		goto fail4;
	}

	return (0);

fail4:
	EFSYS_PROBE(fail4);
fail3:
	EFSYS_PROBE(fail3);
fail2:
	EFSYS_PROBE(fail2);
fail1:
	EFSYS_PROBE1(fail1, efx_rc_t, rc);

	return (rc);
}
