diff options
Diffstat (limited to 'drivers/net/sfc/base/ef10_rx.c')
| -rw-r--r-- | drivers/net/sfc/base/ef10_rx.c | 231 |
1 files changed, 144 insertions, 87 deletions
diff --git a/drivers/net/sfc/base/ef10_rx.c b/drivers/net/sfc/base/ef10_rx.c index 849f674c..2bb6705d 100644 --- a/drivers/net/sfc/base/ef10_rx.c +++ b/drivers/net/sfc/base/ef10_rx.c @@ -1,31 +1,7 @@ -/* - * Copyright (c) 2012-2016 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. +/* SPDX-License-Identifier: BSD-3-Clause * - * 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. + * Copyright (c) 2012-2018 Solarflare Communications Inc. + * All rights reserved. */ #include "efx.h" @@ -38,33 +14,54 @@ static __checkReturn efx_rc_t efx_mcdi_init_rxq( __in efx_nic_t *enp, - __in uint32_t size, + __in uint32_t ndescs, __in uint32_t target_evq, __in uint32_t label, __in uint32_t instance, __in efsys_mem_t *esmp, __in boolean_t disable_scatter, + __in boolean_t want_inner_classes, __in uint32_t ps_bufsize) { + efx_nic_cfg_t *encp = &(enp->en_nic_cfg); efx_mcdi_req_t req; uint8_t payload[MAX(MC_CMD_INIT_RXQ_EXT_IN_LEN, MC_CMD_INIT_RXQ_EXT_OUT_LEN)]; - int npages = EFX_RXQ_NBUFS(size); + int npages = EFX_RXQ_NBUFS(ndescs); int i; efx_qword_t *dma_addr; uint64_t addr; efx_rc_t rc; uint32_t dma_mode; + boolean_t want_outer_classes; - /* If this changes, then the payload size might need to change. */ - EFSYS_ASSERT3U(MC_CMD_INIT_RXQ_OUT_LEN, ==, 0); - EFSYS_ASSERT3U(size, <=, EFX_RXQ_MAXNDESCS); + EFSYS_ASSERT3U(ndescs, <=, EFX_RXQ_MAXNDESCS); if (ps_bufsize > 0) dma_mode = MC_CMD_INIT_RXQ_EXT_IN_PACKED_STREAM; else dma_mode = MC_CMD_INIT_RXQ_EXT_IN_SINGLE_PACKET; + if (encp->enc_tunnel_encapsulations_supported != 0 && + !want_inner_classes) { + /* + * WANT_OUTER_CLASSES can only be specified on hardware which + * supports tunnel encapsulation offloads, even though it is + * effectively the behaviour the hardware gives. + * + * Also, on hardware which does support such offloads, older + * firmware rejects the flag if the offloads are not supported + * by the current firmware variant, which means this may fail if + * the capabilities are not updated when the firmware variant + * changes. This is not an issue on newer firmware, as it was + * changed in bug 69842 (v6.4.2.1007) to permit this flag to be + * specified on all firmware variants. + */ + want_outer_classes = B_TRUE; + } else { + want_outer_classes = B_FALSE; + } + (void) memset(payload, 0, sizeof (payload)); req.emr_cmd = MC_CMD_INIT_RXQ; req.emr_in_buf = payload; @@ -72,11 +69,11 @@ efx_mcdi_init_rxq( req.emr_out_buf = payload; req.emr_out_length = MC_CMD_INIT_RXQ_EXT_OUT_LEN; - MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_SIZE, size); + MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_SIZE, ndescs); MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_TARGET_EVQ, target_evq); MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_LABEL, label); MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_INSTANCE, instance); - MCDI_IN_POPULATE_DWORD_8(req, INIT_RXQ_EXT_IN_FLAGS, + MCDI_IN_POPULATE_DWORD_9(req, INIT_RXQ_EXT_IN_FLAGS, INIT_RXQ_EXT_IN_FLAG_BUFF_MODE, 0, INIT_RXQ_EXT_IN_FLAG_HDR_SPLIT, 0, INIT_RXQ_EXT_IN_FLAG_TIMESTAMP, 0, @@ -85,7 +82,8 @@ efx_mcdi_init_rxq( INIT_RXQ_EXT_IN_FLAG_DISABLE_SCATTER, disable_scatter, INIT_RXQ_EXT_IN_DMA_MODE, dma_mode, - INIT_RXQ_EXT_IN_PACKED_STREAM_BUFF_SIZE, ps_bufsize); + INIT_RXQ_EXT_IN_PACKED_STREAM_BUFF_SIZE, ps_bufsize, + INIT_RXQ_EXT_IN_FLAG_WANT_OUTER_CLASSES, want_outer_classes); MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_OWNER_ID, 0); MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_PORT_ID, EVB_PORT_ID_ASSIGNED); @@ -197,7 +195,13 @@ efx_mcdi_rss_context_alloc( MCDI_IN_SET_DWORD(req, RSS_CONTEXT_ALLOC_IN_UPSTREAM_PORT_ID, EVB_PORT_ID_ASSIGNED); MCDI_IN_SET_DWORD(req, RSS_CONTEXT_ALLOC_IN_TYPE, context_type); - /* NUM_QUEUES is only used to validate indirection table offsets */ + + /* + * For exclusive contexts, NUM_QUEUES is only used to validate + * indirection table offsets. + * For shared contexts, the provided context will spread traffic over + * NUM_QUEUES many queues. + */ MCDI_IN_SET_DWORD(req, RSS_CONTEXT_ALLOC_IN_NUM_QUEUES, num_queues); efx_mcdi_execute(enp, &req); @@ -707,26 +711,45 @@ ef10_rx_prefix_hash( } #endif /* EFSYS_OPT_RX_SCALE */ - void +#if EFSYS_OPT_RX_PACKED_STREAM +/* + * Fake length for RXQ descriptors in packed stream mode + * to make hardware happy + */ +#define EFX_RXQ_PACKED_STREAM_FAKE_BUF_SIZE 32 +#endif + + void ef10_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) + __in efx_rxq_t *erp, + __in_ecount(ndescs) efsys_dma_addr_t *addrp, + __in size_t size, + __in unsigned int ndescs, + __in unsigned int completed, + __in unsigned int added) { efx_qword_t qword; unsigned int i; unsigned int offset; unsigned int id; + _NOTE(ARGUNUSED(completed)) + +#if EFSYS_OPT_RX_PACKED_STREAM + /* + * Real size of the buffer does not fit into ESF_DZ_RX_KER_BYTE_CNT + * and equal to 0 after applying mask. Hardware does not like it. + */ + if (erp->er_ev_qstate->eers_rx_packed_stream) + size = EFX_RXQ_PACKED_STREAM_FAKE_BUF_SIZE; +#endif + /* The client driver must not overfill the queue */ - EFSYS_ASSERT3U(added - completed + n, <=, + EFSYS_ASSERT3U(added - completed + ndescs, <=, EFX_RXQ_LIMIT(erp->er_mask + 1)); id = added & (erp->er_mask); - for (i = 0; i < n; i++) { + for (i = 0; i < ndescs; i++) { EFSYS_PROBE4(rx_post, unsigned int, erp->er_index, unsigned int, id, efsys_dma_addr_t, addrp[i], size_t, size); @@ -779,31 +802,47 @@ ef10_rx_qpush( #if EFSYS_OPT_RX_PACKED_STREAM void -ef10_rx_qps_update_credits( - __in efx_rxq_t *erp) +ef10_rx_qpush_ps_credits( + __in efx_rxq_t *erp) { efx_nic_t *enp = erp->er_enp; efx_dword_t dword; - efx_evq_rxq_state_t *rxq_state = - &erp->er_eep->ee_rxq_state[erp->er_label]; + efx_evq_rxq_state_t *rxq_state = erp->er_ev_qstate; + uint32_t credits; EFSYS_ASSERT(rxq_state->eers_rx_packed_stream); if (rxq_state->eers_rx_packed_stream_credits == 0) return; + /* + * It is a bug if we think that FW has utilized more + * credits than it is allowed to have (maximum). However, + * make sure that we do not credit more than maximum anyway. + */ + credits = MIN(rxq_state->eers_rx_packed_stream_credits, + EFX_RX_PACKED_STREAM_MAX_CREDITS); EFX_POPULATE_DWORD_3(dword, ERF_DZ_RX_DESC_MAGIC_DOORBELL, 1, ERF_DZ_RX_DESC_MAGIC_CMD, ERE_DZ_RX_DESC_MAGIC_CMD_PS_CREDITS, - ERF_DZ_RX_DESC_MAGIC_DATA, - rxq_state->eers_rx_packed_stream_credits); + ERF_DZ_RX_DESC_MAGIC_DATA, credits); EFX_BAR_TBL_WRITED(enp, ER_DZ_RX_DESC_UPD_REG, erp->er_index, &dword, B_FALSE); rxq_state->eers_rx_packed_stream_credits = 0; } +/* + * In accordance with SF-112241-TC the received data has the following layout: + * - 8 byte pseudo-header which consist of: + * - 4 byte little-endian timestamp + * - 2 byte little-endian captured length in bytes + * - 2 byte little-endian original packet length in bytes + * - captured packet bytes + * - optional padding to align to 64 bytes boundary + * - 64 bytes scratch space for the host software + */ __checkReturn uint8_t * ef10_rx_qps_packet_info( __in efx_rxq_t *erp, @@ -817,8 +856,7 @@ ef10_rx_qps_packet_info( uint16_t buf_len; uint8_t *pkt_start; efx_qword_t *qwordp; - efx_evq_rxq_state_t *rxq_state = - &erp->er_eep->ee_rxq_state[erp->er_label]; + efx_evq_rxq_state_t *rxq_state = erp->er_ev_qstate; EFSYS_ASSERT(rxq_state->eers_rx_packed_stream); @@ -839,11 +877,8 @@ ef10_rx_qps_packet_info( EFSYS_ASSERT3U(current_offset + *lengthp, <, *next_offsetp); if ((*next_offsetp ^ current_offset) & - EFX_RX_PACKED_STREAM_MEM_PER_CREDIT) { - if (rxq_state->eers_rx_packed_stream_credits < - EFX_RX_PACKED_STREAM_MAX_CREDITS) - rxq_state->eers_rx_packed_stream_credits++; - } + EFX_RX_PACKED_STREAM_MEM_PER_CREDIT) + rxq_state->eers_rx_packed_stream_credits++; return (pkt_start); } @@ -891,18 +926,21 @@ ef10_rx_qcreate( __in unsigned int index, __in unsigned int label, __in efx_rxq_type_t type, + __in uint32_t type_data, __in efsys_mem_t *esmp, - __in size_t n, + __in size_t ndescs, __in uint32_t id, + __in unsigned int flags, __in efx_evq_t *eep, __in efx_rxq_t *erp) { efx_nic_cfg_t *encp = &(enp->en_nic_cfg); efx_rc_t rc; boolean_t disable_scatter; + boolean_t want_inner_classes; unsigned int ps_buf_size; - _NOTE(ARGUNUSED(id, erp)) + _NOTE(ARGUNUSED(id, erp, type_data)) EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS == (1 << ESF_DZ_RX_QLABEL_WIDTH)); EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS); @@ -911,7 +949,8 @@ ef10_rx_qcreate( 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)) { + if (!ISP2(ndescs) || + (ndescs < EFX_RXQ_MINNDESCS) || (ndescs > EFX_RXQ_MAXNDESCS)) { rc = EINVAL; goto fail1; } @@ -922,29 +961,35 @@ ef10_rx_qcreate( switch (type) { case EFX_RXQ_TYPE_DEFAULT: - case EFX_RXQ_TYPE_SCATTER: ps_buf_size = 0; break; #if EFSYS_OPT_RX_PACKED_STREAM - case EFX_RXQ_TYPE_PACKED_STREAM_1M: - ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_1M; - break; - case EFX_RXQ_TYPE_PACKED_STREAM_512K: - ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_512K; - break; - case EFX_RXQ_TYPE_PACKED_STREAM_256K: - ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_256K; - break; - case EFX_RXQ_TYPE_PACKED_STREAM_128K: - ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_128K; - break; - case EFX_RXQ_TYPE_PACKED_STREAM_64K: - ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_64K; + case EFX_RXQ_TYPE_PACKED_STREAM: + switch (type_data) { + case EFX_RXQ_PACKED_STREAM_BUF_SIZE_1M: + ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_1M; + break; + case EFX_RXQ_PACKED_STREAM_BUF_SIZE_512K: + ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_512K; + break; + case EFX_RXQ_PACKED_STREAM_BUF_SIZE_256K: + ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_256K; + break; + case EFX_RXQ_PACKED_STREAM_BUF_SIZE_128K: + ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_128K; + break; + case EFX_RXQ_PACKED_STREAM_BUF_SIZE_64K: + ps_buf_size = MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_64K; + break; + default: + rc = ENOTSUP; + goto fail3; + } break; #endif /* EFSYS_OPT_RX_PACKED_STREAM */ default: rc = ENOTSUP; - goto fail3; + goto fail4; } #if EFSYS_OPT_RX_PACKED_STREAM @@ -952,13 +997,13 @@ ef10_rx_qcreate( /* Check if datapath firmware supports packed stream mode */ if (encp->enc_rx_packed_stream_supported == B_FALSE) { rc = ENOTSUP; - goto fail4; + goto fail5; } /* Check if packed stream allows configurable buffer sizes */ - if ((type != EFX_RXQ_TYPE_PACKED_STREAM_1M) && + if ((ps_buf_size != MC_CMD_INIT_RXQ_EXT_IN_PS_BUFF_1M) && (encp->enc_rx_var_packed_stream_supported == B_FALSE)) { rc = ENOTSUP; - goto fail5; + goto fail6; } } #else /* EFSYS_OPT_RX_PACKED_STREAM */ @@ -966,32 +1011,44 @@ ef10_rx_qcreate( #endif /* EFSYS_OPT_RX_PACKED_STREAM */ /* Scatter can only be disabled if the firmware supports doing so */ - if (type == EFX_RXQ_TYPE_SCATTER) + if (flags & EFX_RXQ_FLAG_SCATTER) disable_scatter = B_FALSE; else disable_scatter = encp->enc_rx_disable_scatter_supported; - if ((rc = efx_mcdi_init_rxq(enp, n, eep->ee_index, label, index, - esmp, disable_scatter, ps_buf_size)) != 0) - goto fail6; + if (flags & EFX_RXQ_FLAG_INNER_CLASSES) + want_inner_classes = B_TRUE; + else + want_inner_classes = B_FALSE; + + if ((rc = efx_mcdi_init_rxq(enp, ndescs, eep->ee_index, label, index, + esmp, disable_scatter, want_inner_classes, + ps_buf_size)) != 0) + goto fail7; erp->er_eep = eep; erp->er_label = label; - ef10_ev_rxlabel_init(eep, erp, label, ps_buf_size != 0); + ef10_ev_rxlabel_init(eep, erp, label, type); + + erp->er_ev_qstate = &erp->er_eep->ee_rxq_state[label]; return (0); +fail7: + EFSYS_PROBE(fail7); +#if EFSYS_OPT_RX_PACKED_STREAM fail6: EFSYS_PROBE(fail6); -#if EFSYS_OPT_RX_PACKED_STREAM fail5: EFSYS_PROBE(fail5); +#endif /* EFSYS_OPT_RX_PACKED_STREAM */ fail4: EFSYS_PROBE(fail4); -#endif /* EFSYS_OPT_RX_PACKED_STREAM */ +#if EFSYS_OPT_RX_PACKED_STREAM fail3: EFSYS_PROBE(fail3); +#endif /* EFSYS_OPT_RX_PACKED_STREAM */ fail2: EFSYS_PROBE(fail2); fail1: |