diff options
Diffstat (limited to 'drivers/net/sfc/base/efx_rx.c')
| -rw-r--r-- | drivers/net/sfc/base/efx_rx.c | 1315 |
1 files changed, 1315 insertions, 0 deletions
diff --git a/drivers/net/sfc/base/efx_rx.c b/drivers/net/sfc/base/efx_rx.c new file mode 100644 index 00000000..c8156341 --- /dev/null +++ b/drivers/net/sfc/base/efx_rx.c @@ -0,0 +1,1315 @@ +/* + * Copyright (c) 2007-2016 Solarflare Communications Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are + * those of the authors and should not be interpreted as representing official + * policies, either expressed or implied, of the FreeBSD Project. + */ + +#include "efx.h" +#include "efx_impl.h" + + +#if EFSYS_OPT_SIENA + +static __checkReturn efx_rc_t +siena_rx_init( + __in efx_nic_t *enp); + +static void +siena_rx_fini( + __in efx_nic_t *enp); + +#if EFSYS_OPT_RX_SCATTER +static __checkReturn efx_rc_t +siena_rx_scatter_enable( + __in efx_nic_t *enp, + __in unsigned int buf_size); +#endif /* EFSYS_OPT_RX_SCATTER */ + +#if EFSYS_OPT_RX_SCALE +static __checkReturn efx_rc_t +siena_rx_scale_mode_set( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t alg, + __in efx_rx_hash_type_t type, + __in boolean_t insert); + +static __checkReturn efx_rc_t +siena_rx_scale_key_set( + __in efx_nic_t *enp, + __in_ecount(n) uint8_t *key, + __in size_t n); + +static __checkReturn efx_rc_t +siena_rx_scale_tbl_set( + __in efx_nic_t *enp, + __in_ecount(n) unsigned int *table, + __in size_t n); + +static __checkReturn uint32_t +siena_rx_prefix_hash( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t func, + __in uint8_t *buffer); + +#endif /* EFSYS_OPT_RX_SCALE */ + +static __checkReturn efx_rc_t +siena_rx_prefix_pktlen( + __in efx_nic_t *enp, + __in uint8_t *buffer, + __out uint16_t *lengthp); + +static void +siena_rx_qpost( + __in efx_rxq_t *erp, + __in_ecount(n) efsys_dma_addr_t *addrp, + __in size_t size, + __in unsigned int n, + __in unsigned int completed, + __in unsigned int added); + +static void +siena_rx_qpush( + __in efx_rxq_t *erp, + __in unsigned int added, + __inout unsigned int *pushedp); + +#if EFSYS_OPT_RX_PACKED_STREAM +static void +siena_rx_qps_update_credits( + __in efx_rxq_t *erp); + +static __checkReturn uint8_t * +siena_rx_qps_packet_info( + __in efx_rxq_t *erp, + __in uint8_t *buffer, + __in uint32_t buffer_length, + __in uint32_t current_offset, + __out uint16_t *lengthp, + __out uint32_t *next_offsetp, + __out uint32_t *timestamp); +#endif + +static __checkReturn efx_rc_t +siena_rx_qflush( + __in efx_rxq_t *erp); + +static void +siena_rx_qenable( + __in efx_rxq_t *erp); + +static __checkReturn efx_rc_t +siena_rx_qcreate( + __in efx_nic_t *enp, + __in unsigned int index, + __in unsigned int label, + __in efx_rxq_type_t type, + __in efsys_mem_t *esmp, + __in size_t n, + __in uint32_t id, + __in efx_evq_t *eep, + __in efx_rxq_t *erp); + +static void +siena_rx_qdestroy( + __in efx_rxq_t *erp); + +#endif /* EFSYS_OPT_SIENA */ + + +#if EFSYS_OPT_SIENA +static const efx_rx_ops_t __efx_rx_siena_ops = { + siena_rx_init, /* erxo_init */ + siena_rx_fini, /* erxo_fini */ +#if EFSYS_OPT_RX_SCATTER + siena_rx_scatter_enable, /* erxo_scatter_enable */ +#endif +#if EFSYS_OPT_RX_SCALE + siena_rx_scale_mode_set, /* erxo_scale_mode_set */ + siena_rx_scale_key_set, /* erxo_scale_key_set */ + siena_rx_scale_tbl_set, /* erxo_scale_tbl_set */ + siena_rx_prefix_hash, /* erxo_prefix_hash */ +#endif + siena_rx_prefix_pktlen, /* erxo_prefix_pktlen */ + siena_rx_qpost, /* erxo_qpost */ + siena_rx_qpush, /* erxo_qpush */ +#if EFSYS_OPT_RX_PACKED_STREAM + siena_rx_qps_update_credits, /* erxo_qps_update_credits */ + siena_rx_qps_packet_info, /* erxo_qps_packet_info */ +#endif + siena_rx_qflush, /* erxo_qflush */ + siena_rx_qenable, /* erxo_qenable */ + siena_rx_qcreate, /* erxo_qcreate */ + siena_rx_qdestroy, /* erxo_qdestroy */ +}; +#endif /* EFSYS_OPT_SIENA */ + +#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD +static const efx_rx_ops_t __efx_rx_ef10_ops = { + ef10_rx_init, /* erxo_init */ + ef10_rx_fini, /* erxo_fini */ +#if EFSYS_OPT_RX_SCATTER + ef10_rx_scatter_enable, /* erxo_scatter_enable */ +#endif +#if EFSYS_OPT_RX_SCALE + ef10_rx_scale_mode_set, /* erxo_scale_mode_set */ + ef10_rx_scale_key_set, /* erxo_scale_key_set */ + ef10_rx_scale_tbl_set, /* erxo_scale_tbl_set */ + ef10_rx_prefix_hash, /* erxo_prefix_hash */ +#endif + ef10_rx_prefix_pktlen, /* erxo_prefix_pktlen */ + ef10_rx_qpost, /* erxo_qpost */ + ef10_rx_qpush, /* erxo_qpush */ +#if EFSYS_OPT_RX_PACKED_STREAM + ef10_rx_qps_update_credits, /* erxo_qps_update_credits */ + ef10_rx_qps_packet_info, /* erxo_qps_packet_info */ +#endif + ef10_rx_qflush, /* erxo_qflush */ + ef10_rx_qenable, /* erxo_qenable */ + ef10_rx_qcreate, /* erxo_qcreate */ + ef10_rx_qdestroy, /* erxo_qdestroy */ +}; +#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */ + + + __checkReturn efx_rc_t +efx_rx_init( + __inout efx_nic_t *enp) +{ + const efx_rx_ops_t *erxop; + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC); + + if (!(enp->en_mod_flags & EFX_MOD_EV)) { + rc = EINVAL; + goto fail1; + } + + if (enp->en_mod_flags & EFX_MOD_RX) { + rc = EINVAL; + goto fail2; + } + + switch (enp->en_family) { +#if EFSYS_OPT_SIENA + case EFX_FAMILY_SIENA: + erxop = &__efx_rx_siena_ops; + break; +#endif /* EFSYS_OPT_SIENA */ + +#if EFSYS_OPT_HUNTINGTON + case EFX_FAMILY_HUNTINGTON: + erxop = &__efx_rx_ef10_ops; + break; +#endif /* EFSYS_OPT_HUNTINGTON */ + +#if EFSYS_OPT_MEDFORD + case EFX_FAMILY_MEDFORD: + erxop = &__efx_rx_ef10_ops; + break; +#endif /* EFSYS_OPT_MEDFORD */ + + default: + EFSYS_ASSERT(0); + rc = ENOTSUP; + goto fail3; + } + + if ((rc = erxop->erxo_init(enp)) != 0) + goto fail4; + + enp->en_erxop = erxop; + enp->en_mod_flags |= EFX_MOD_RX; + return (0); + +fail4: + EFSYS_PROBE(fail4); +fail3: + EFSYS_PROBE(fail3); +fail2: + EFSYS_PROBE(fail2); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + enp->en_erxop = NULL; + enp->en_mod_flags &= ~EFX_MOD_RX; + return (rc); +} + + void +efx_rx_fini( + __in efx_nic_t *enp) +{ + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + EFSYS_ASSERT3U(enp->en_rx_qcount, ==, 0); + + erxop->erxo_fini(enp); + + enp->en_erxop = NULL; + enp->en_mod_flags &= ~EFX_MOD_RX; +} + +#if EFSYS_OPT_RX_SCATTER + __checkReturn efx_rc_t +efx_rx_scatter_enable( + __in efx_nic_t *enp, + __in unsigned int buf_size) +{ + const efx_rx_ops_t *erxop = enp->en_erxop; + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + + if ((rc = erxop->erxo_scatter_enable(enp, buf_size)) != 0) + goto fail1; + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + return (rc); +} +#endif /* EFSYS_OPT_RX_SCATTER */ + +#if EFSYS_OPT_RX_SCALE + __checkReturn efx_rc_t +efx_rx_hash_support_get( + __in efx_nic_t *enp, + __out efx_rx_hash_support_t *supportp) +{ + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + + if (supportp == NULL) { + rc = EINVAL; + goto fail1; + } + + /* Report if resources are available to insert RX hash value */ + *supportp = enp->en_hash_support; + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + + __checkReturn efx_rc_t +efx_rx_scale_support_get( + __in efx_nic_t *enp, + __out efx_rx_scale_support_t *supportp) +{ + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + + if (supportp == NULL) { + rc = EINVAL; + goto fail1; + } + + /* Report if resources are available to support RSS */ + *supportp = enp->en_rss_support; + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + + __checkReturn efx_rc_t +efx_rx_scale_mode_set( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t alg, + __in efx_rx_hash_type_t type, + __in boolean_t insert) +{ + const efx_rx_ops_t *erxop = enp->en_erxop; + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + + if (erxop->erxo_scale_mode_set != NULL) { + if ((rc = erxop->erxo_scale_mode_set(enp, alg, + type, insert)) != 0) + goto fail1; + } + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + return (rc); +} +#endif /* EFSYS_OPT_RX_SCALE */ + +#if EFSYS_OPT_RX_SCALE + __checkReturn efx_rc_t +efx_rx_scale_key_set( + __in efx_nic_t *enp, + __in_ecount(n) uint8_t *key, + __in size_t n) +{ + const efx_rx_ops_t *erxop = enp->en_erxop; + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + + if ((rc = erxop->erxo_scale_key_set(enp, key, n)) != 0) + goto fail1; + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} +#endif /* EFSYS_OPT_RX_SCALE */ + +#if EFSYS_OPT_RX_SCALE + __checkReturn efx_rc_t +efx_rx_scale_tbl_set( + __in efx_nic_t *enp, + __in_ecount(n) unsigned int *table, + __in size_t n) +{ + const efx_rx_ops_t *erxop = enp->en_erxop; + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + + if ((rc = erxop->erxo_scale_tbl_set(enp, table, n)) != 0) + goto fail1; + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} +#endif /* EFSYS_OPT_RX_SCALE */ + + void +efx_rx_qpost( + __in efx_rxq_t *erp, + __in_ecount(n) efsys_dma_addr_t *addrp, + __in size_t size, + __in unsigned int n, + __in unsigned int completed, + __in unsigned int added) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + erxop->erxo_qpost(erp, addrp, size, n, completed, added); +} + +#if EFSYS_OPT_RX_PACKED_STREAM + + void +efx_rx_qps_update_credits( + __in efx_rxq_t *erp) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + erxop->erxo_qps_update_credits(erp); +} + + __checkReturn uint8_t * +efx_rx_qps_packet_info( + __in efx_rxq_t *erp, + __in uint8_t *buffer, + __in uint32_t buffer_length, + __in uint32_t current_offset, + __out uint16_t *lengthp, + __out uint32_t *next_offsetp, + __out uint32_t *timestamp) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + return (erxop->erxo_qps_packet_info(erp, buffer, + buffer_length, current_offset, lengthp, + next_offsetp, timestamp)); +} + +#endif /* EFSYS_OPT_RX_PACKED_STREAM */ + + void +efx_rx_qpush( + __in efx_rxq_t *erp, + __in unsigned int added, + __inout unsigned int *pushedp) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + erxop->erxo_qpush(erp, added, pushedp); +} + + __checkReturn efx_rc_t +efx_rx_qflush( + __in efx_rxq_t *erp) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + efx_rc_t rc; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + if ((rc = erxop->erxo_qflush(erp)) != 0) + goto fail1; + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + + void +efx_rx_qenable( + __in efx_rxq_t *erp) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + erxop->erxo_qenable(erp); +} + + __checkReturn efx_rc_t +efx_rx_qcreate( + __in efx_nic_t *enp, + __in unsigned int index, + __in unsigned int label, + __in efx_rxq_type_t type, + __in efsys_mem_t *esmp, + __in size_t n, + __in uint32_t id, + __in efx_evq_t *eep, + __deref_out efx_rxq_t **erpp) +{ + const efx_rx_ops_t *erxop = enp->en_erxop; + efx_rxq_t *erp; + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); + EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX); + + /* Allocate an RXQ object */ + EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp); + + if (erp == NULL) { + rc = ENOMEM; + goto fail1; + } + + erp->er_magic = EFX_RXQ_MAGIC; + erp->er_enp = enp; + erp->er_index = index; + erp->er_mask = n - 1; + erp->er_esmp = esmp; + + if ((rc = erxop->erxo_qcreate(enp, index, label, type, esmp, n, id, + eep, erp)) != 0) + goto fail2; + + enp->en_rx_qcount++; + *erpp = erp; + + return (0); + +fail2: + EFSYS_PROBE(fail2); + + EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + + void +efx_rx_qdestroy( + __in efx_rxq_t *erp) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + erxop->erxo_qdestroy(erp); +} + + __checkReturn efx_rc_t +efx_pseudo_hdr_pkt_length_get( + __in efx_rxq_t *erp, + __in uint8_t *buffer, + __out uint16_t *lengthp) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + return (erxop->erxo_prefix_pktlen(enp, buffer, lengthp)); +} + +#if EFSYS_OPT_RX_SCALE + __checkReturn uint32_t +efx_pseudo_hdr_hash_get( + __in efx_rxq_t *erp, + __in efx_rx_hash_alg_t func, + __in uint8_t *buffer) +{ + efx_nic_t *enp = erp->er_enp; + const efx_rx_ops_t *erxop = enp->en_erxop; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + EFSYS_ASSERT3U(enp->en_hash_support, ==, EFX_RX_HASH_AVAILABLE); + return (erxop->erxo_prefix_hash(enp, func, buffer)); +} +#endif /* EFSYS_OPT_RX_SCALE */ + +#if EFSYS_OPT_SIENA + +static __checkReturn efx_rc_t +siena_rx_init( + __in efx_nic_t *enp) +{ + efx_oword_t oword; + unsigned int index; + + EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword); + + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0); + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0); + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0); + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0); + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0); + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32); + EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword); + + /* Zero the RSS table */ + for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; + index++) { + EFX_ZERO_OWORD(oword); + EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL, + index, &oword, B_TRUE); + } + +#if EFSYS_OPT_RX_SCALE + /* The RSS key and indirection table are writable. */ + enp->en_rss_support = EFX_RX_SCALE_EXCLUSIVE; + + /* Hardware can insert RX hash with/without RSS */ + enp->en_hash_support = EFX_RX_HASH_AVAILABLE; +#endif /* EFSYS_OPT_RX_SCALE */ + + return (0); +} + +#if EFSYS_OPT_RX_SCATTER +static __checkReturn efx_rc_t +siena_rx_scatter_enable( + __in efx_nic_t *enp, + __in unsigned int buf_size) +{ + unsigned int nbuf32; + efx_oword_t oword; + efx_rc_t rc; + + nbuf32 = buf_size / 32; + if ((nbuf32 == 0) || + (nbuf32 >= (1 << FRF_BZ_RX_USR_BUF_SIZE_WIDTH)) || + ((buf_size % 32) != 0)) { + rc = EINVAL; + goto fail1; + } + + if (enp->en_rx_qcount > 0) { + rc = EBUSY; + goto fail2; + } + + /* Set scatter buffer size */ + EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword); + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, nbuf32); + EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword); + + /* Enable scatter for packets not matching a filter */ + EFX_BAR_READO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword); + EFX_SET_OWORD_FIELD(oword, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q, 1); + EFX_BAR_WRITEO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword); + + return (0); + +fail2: + EFSYS_PROBE(fail2); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} +#endif /* EFSYS_OPT_RX_SCATTER */ + + +#define EFX_RX_LFSR_HASH(_enp, _insert) \ + do { \ + efx_oword_t oword; \ + \ + EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \ + (_insert) ? 1 : 0); \ + EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \ + \ + if ((_enp)->en_family == EFX_FAMILY_SIENA) { \ + EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \ + &oword); \ + EFX_SET_OWORD_FIELD(oword, \ + FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0); \ + EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \ + &oword); \ + } \ + \ + _NOTE(CONSTANTCONDITION) \ + } while (B_FALSE) + +#define EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp) \ + do { \ + efx_oword_t oword; \ + \ + EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, \ + (_ip) ? 1 : 0); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, \ + (_tcp) ? 0 : 1); \ + EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \ + (_insert) ? 1 : 0); \ + EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \ + \ + _NOTE(CONSTANTCONDITION) \ + } while (B_FALSE) + +#define EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc) \ + do { \ + efx_oword_t oword; \ + \ + EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \ + EFX_SET_OWORD_FIELD(oword, \ + FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1); \ + EFX_SET_OWORD_FIELD(oword, \ + FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0); \ + EFX_SET_OWORD_FIELD(oword, \ + FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1); \ + EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \ + \ + (_rc) = 0; \ + \ + _NOTE(CONSTANTCONDITION) \ + } while (B_FALSE) + + +#if EFSYS_OPT_RX_SCALE + +static __checkReturn efx_rc_t +siena_rx_scale_mode_set( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t alg, + __in efx_rx_hash_type_t type, + __in boolean_t insert) +{ + efx_rc_t rc; + + switch (alg) { + case EFX_RX_HASHALG_LFSR: + EFX_RX_LFSR_HASH(enp, insert); + break; + + case EFX_RX_HASHALG_TOEPLITZ: + EFX_RX_TOEPLITZ_IPV4_HASH(enp, insert, + type & EFX_RX_HASH_IPV4, + type & EFX_RX_HASH_TCPIPV4); + + EFX_RX_TOEPLITZ_IPV6_HASH(enp, + type & EFX_RX_HASH_IPV6, + type & EFX_RX_HASH_TCPIPV6, + rc); + if (rc != 0) + goto fail1; + + break; + + default: + rc = EINVAL; + goto fail2; + } + + return (0); + +fail2: + EFSYS_PROBE(fail2); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + EFX_RX_LFSR_HASH(enp, B_FALSE); + + return (rc); +} +#endif + +#if EFSYS_OPT_RX_SCALE +static __checkReturn efx_rc_t +siena_rx_scale_key_set( + __in efx_nic_t *enp, + __in_ecount(n) uint8_t *key, + __in size_t n) +{ + efx_oword_t oword; + unsigned int byte; + unsigned int offset; + efx_rc_t rc; + + byte = 0; + + /* Write Toeplitz IPv4 hash key */ + EFX_ZERO_OWORD(oword); + for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8; + offset > 0 && byte < n; + --offset) + oword.eo_u8[offset - 1] = key[byte++]; + + EFX_BAR_WRITEO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword); + + byte = 0; + + /* Verify Toeplitz IPv4 hash key */ + EFX_BAR_READO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword); + for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8; + offset > 0 && byte < n; + --offset) { + if (oword.eo_u8[offset - 1] != key[byte++]) { + rc = EFAULT; + goto fail1; + } + } + + if ((enp->en_features & EFX_FEATURE_IPV6) == 0) + goto done; + + byte = 0; + + /* Write Toeplitz IPv6 hash key 3 */ + EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword); + for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN + + FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8; + offset > 0 && byte < n; + --offset) + oword.eo_u8[offset - 1] = key[byte++]; + + EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword); + + /* Write Toeplitz IPv6 hash key 2 */ + EFX_ZERO_OWORD(oword); + for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN + + FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8; + offset > 0 && byte < n; + --offset) + oword.eo_u8[offset - 1] = key[byte++]; + + EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword); + + /* Write Toeplitz IPv6 hash key 1 */ + EFX_ZERO_OWORD(oword); + for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN + + FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8; + offset > 0 && byte < n; + --offset) + oword.eo_u8[offset - 1] = key[byte++]; + + EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword); + + byte = 0; + + /* Verify Toeplitz IPv6 hash key 3 */ + EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword); + for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN + + FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8; + offset > 0 && byte < n; + --offset) { + if (oword.eo_u8[offset - 1] != key[byte++]) { + rc = EFAULT; + goto fail2; + } + } + + /* Verify Toeplitz IPv6 hash key 2 */ + EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword); + for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN + + FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8; + offset > 0 && byte < n; + --offset) { + if (oword.eo_u8[offset - 1] != key[byte++]) { + rc = EFAULT; + goto fail3; + } + } + + /* Verify Toeplitz IPv6 hash key 1 */ + EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword); + for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN + + FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8; + offset > 0 && byte < n; + --offset) { + if (oword.eo_u8[offset - 1] != key[byte++]) { + rc = EFAULT; + goto fail4; + } + } + +done: + return (0); + +fail4: + EFSYS_PROBE(fail4); +fail3: + EFSYS_PROBE(fail3); +fail2: + EFSYS_PROBE(fail2); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} +#endif + +#if EFSYS_OPT_RX_SCALE +static __checkReturn efx_rc_t +siena_rx_scale_tbl_set( + __in efx_nic_t *enp, + __in_ecount(n) unsigned int *table, + __in size_t n) +{ + efx_oword_t oword; + int index; + efx_rc_t rc; + + EFX_STATIC_ASSERT(EFX_RSS_TBL_SIZE == FR_BZ_RX_INDIRECTION_TBL_ROWS); + EFX_STATIC_ASSERT(EFX_MAXRSS == (1 << FRF_BZ_IT_QUEUE_WIDTH)); + + if (n > FR_BZ_RX_INDIRECTION_TBL_ROWS) { + rc = EINVAL; + goto fail1; + } + + for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; index++) { + uint32_t byte; + + /* Calculate the entry to place in the table */ + byte = (n > 0) ? (uint32_t)table[index % n] : 0; + + EFSYS_PROBE2(table, int, index, uint32_t, byte); + + EFX_POPULATE_OWORD_1(oword, FRF_BZ_IT_QUEUE, byte); + + /* Write the table */ + EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL, + index, &oword, B_TRUE); + } + + for (index = FR_BZ_RX_INDIRECTION_TBL_ROWS - 1; index >= 0; --index) { + uint32_t byte; + + /* Determine if we're starting a new batch */ + byte = (n > 0) ? (uint32_t)table[index % n] : 0; + + /* Read the table */ + EFX_BAR_TBL_READO(enp, FR_BZ_RX_INDIRECTION_TBL, + index, &oword, B_TRUE); + + /* Verify the entry */ + if (EFX_OWORD_FIELD(oword, FRF_BZ_IT_QUEUE) != byte) { + rc = EFAULT; + goto fail2; + } + } + + return (0); + +fail2: + EFSYS_PROBE(fail2); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} +#endif + +/* + * Falcon/Siena pseudo-header + * -------------------------- + * + * Receive packets are prefixed by an optional 16 byte pseudo-header. + * The pseudo-header is a byte array of one of the forms: + * + * 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 + * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.TT.TT.TT.TT + * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.LL.LL + * + * where: + * TT.TT.TT.TT Toeplitz hash (32-bit big-endian) + * LL.LL LFSR hash (16-bit big-endian) + */ + +#if EFSYS_OPT_RX_SCALE +static __checkReturn uint32_t +siena_rx_prefix_hash( + __in efx_nic_t *enp, + __in efx_rx_hash_alg_t func, + __in uint8_t *buffer) +{ + _NOTE(ARGUNUSED(enp)) + + switch (func) { + case EFX_RX_HASHALG_TOEPLITZ: + return ((buffer[12] << 24) | + (buffer[13] << 16) | + (buffer[14] << 8) | + buffer[15]); + + case EFX_RX_HASHALG_LFSR: + return ((buffer[14] << 8) | buffer[15]); + + default: + EFSYS_ASSERT(0); + return (0); + } +} +#endif /* EFSYS_OPT_RX_SCALE */ + +static __checkReturn efx_rc_t +siena_rx_prefix_pktlen( + __in efx_nic_t *enp, + __in uint8_t *buffer, + __out uint16_t *lengthp) +{ + _NOTE(ARGUNUSED(enp, buffer, lengthp)) + + /* Not supported by Falcon/Siena hardware */ + EFSYS_ASSERT(0); + return (ENOTSUP); +} + + +static void +siena_rx_qpost( + __in efx_rxq_t *erp, + __in_ecount(n) efsys_dma_addr_t *addrp, + __in size_t size, + __in unsigned int n, + __in unsigned int completed, + __in unsigned int added) +{ + efx_qword_t qword; + unsigned int i; + unsigned int offset; + unsigned int id; + + /* The client driver must not overfill the queue */ + EFSYS_ASSERT3U(added - completed + n, <=, + EFX_RXQ_LIMIT(erp->er_mask + 1)); + + id = added & (erp->er_mask); + for (i = 0; i < n; i++) { + EFSYS_PROBE4(rx_post, unsigned int, erp->er_index, + unsigned int, id, efsys_dma_addr_t, addrp[i], + size_t, size); + + EFX_POPULATE_QWORD_3(qword, + FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size), + FSF_AZ_RX_KER_BUF_ADDR_DW0, + (uint32_t)(addrp[i] & 0xffffffff), + FSF_AZ_RX_KER_BUF_ADDR_DW1, + (uint32_t)(addrp[i] >> 32)); + + offset = id * sizeof (efx_qword_t); + EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword); + + id = (id + 1) & (erp->er_mask); + } +} + +static void +siena_rx_qpush( + __in efx_rxq_t *erp, + __in unsigned int added, + __inout unsigned int *pushedp) +{ + efx_nic_t *enp = erp->er_enp; + unsigned int pushed = *pushedp; + uint32_t wptr; + efx_oword_t oword; + efx_dword_t dword; + + /* All descriptors are pushed */ + *pushedp = added; + + /* Push the populated descriptors out */ + wptr = added & erp->er_mask; + + EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr); + + /* Only write the third DWORD */ + EFX_POPULATE_DWORD_1(dword, + EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3)); + + /* Guarantee ordering of memory (descriptors) and PIO (doorbell) */ + EFX_DMA_SYNC_QUEUE_FOR_DEVICE(erp->er_esmp, erp->er_mask + 1, + wptr, pushed & erp->er_mask); + EFSYS_PIO_WRITE_BARRIER(); + EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0, + erp->er_index, &dword, B_FALSE); +} + +#if EFSYS_OPT_RX_PACKED_STREAM +static void +siena_rx_qps_update_credits( + __in efx_rxq_t *erp) +{ + /* Not supported by Siena hardware */ + EFSYS_ASSERT(0); +} + +static uint8_t * +siena_rx_qps_packet_info( + __in efx_rxq_t *erp, + __in uint8_t *buffer, + __in uint32_t buffer_length, + __in uint32_t current_offset, + __out uint16_t *lengthp, + __out uint32_t *next_offsetp, + __out uint32_t *timestamp) +{ + /* Not supported by Siena hardware */ + EFSYS_ASSERT(0); + + return (NULL); +} +#endif /* EFSYS_OPT_RX_PACKED_STREAM */ + +static __checkReturn efx_rc_t +siena_rx_qflush( + __in efx_rxq_t *erp) +{ + efx_nic_t *enp = erp->er_enp; + efx_oword_t oword; + uint32_t label; + + label = erp->er_index; + + /* Flush the queue */ + EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1, + FRF_AZ_RX_FLUSH_DESCQ, label); + EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword); + + return (0); +} + +static void +siena_rx_qenable( + __in efx_rxq_t *erp) +{ + efx_nic_t *enp = erp->er_enp; + efx_oword_t oword; + + EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC); + + EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL, + erp->er_index, &oword, B_TRUE); + + EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0); + EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0); + EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1); + + EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL, + erp->er_index, &oword, B_TRUE); +} + +static __checkReturn efx_rc_t +siena_rx_qcreate( + __in efx_nic_t *enp, + __in unsigned int index, + __in unsigned int label, + __in efx_rxq_type_t type, + __in efsys_mem_t *esmp, + __in size_t n, + __in uint32_t id, + __in efx_evq_t *eep, + __in efx_rxq_t *erp) +{ + efx_nic_cfg_t *encp = &(enp->en_nic_cfg); + efx_oword_t oword; + uint32_t size; + boolean_t jumbo; + efx_rc_t rc; + + _NOTE(ARGUNUSED(esmp)) + + EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS == + (1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH)); + EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS); + EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit); + + EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MAXNDESCS)); + EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MINNDESCS)); + + if (!ISP2(n) || (n < EFX_RXQ_MINNDESCS) || (n > EFX_RXQ_MAXNDESCS)) { + rc = EINVAL; + goto fail1; + } + if (index >= encp->enc_rxq_limit) { + rc = EINVAL; + goto fail2; + } + for (size = 0; (1 << size) <= (EFX_RXQ_MAXNDESCS / EFX_RXQ_MINNDESCS); + size++) + if ((1 << size) == (int)(n / EFX_RXQ_MINNDESCS)) + break; + if (id + (1 << size) >= encp->enc_buftbl_limit) { + rc = EINVAL; + goto fail3; + } + + switch (type) { + case EFX_RXQ_TYPE_DEFAULT: + jumbo = B_FALSE; + break; + +#if EFSYS_OPT_RX_SCATTER + case EFX_RXQ_TYPE_SCATTER: + if (enp->en_family < EFX_FAMILY_SIENA) { + rc = EINVAL; + goto fail4; + } + jumbo = B_TRUE; + break; +#endif /* EFSYS_OPT_RX_SCATTER */ + + default: + rc = EINVAL; + goto fail4; + } + + /* Set up the new descriptor queue */ + EFX_POPULATE_OWORD_7(oword, + FRF_AZ_RX_DESCQ_BUF_BASE_ID, id, + FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index, + FRF_AZ_RX_DESCQ_OWNER_ID, 0, + FRF_AZ_RX_DESCQ_LABEL, label, + FRF_AZ_RX_DESCQ_SIZE, size, + FRF_AZ_RX_DESCQ_TYPE, 0, + FRF_AZ_RX_DESCQ_JUMBO, jumbo); + + EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL, + erp->er_index, &oword, B_TRUE); + + return (0); + +fail4: + EFSYS_PROBE(fail4); +fail3: + EFSYS_PROBE(fail3); +fail2: + EFSYS_PROBE(fail2); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + +static void +siena_rx_qdestroy( + __in efx_rxq_t *erp) +{ + efx_nic_t *enp = erp->er_enp; + efx_oword_t oword; + + EFSYS_ASSERT(enp->en_rx_qcount != 0); + --enp->en_rx_qcount; + + /* Purge descriptor queue */ + EFX_ZERO_OWORD(oword); + + EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL, + erp->er_index, &oword, B_TRUE); + + /* Free the RXQ object */ + EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp); +} + +static void +siena_rx_fini( + __in efx_nic_t *enp) +{ + _NOTE(ARGUNUSED(enp)) +} + +#endif /* EFSYS_OPT_SIENA */ |