71625ec9ad
Remove /^/[*/]\s*\$FreeBSD\$.*\n/
178 lines
5.9 KiB
C
178 lines
5.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/* Copyright (c) 2021, Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file iavf_vc_iflib.c
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* @brief iflib-specific Virtchnl interface functions
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*
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* Contains functions implementing the virtchnl interface for communicating
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* with the PF driver. This file contains definitions specific to the iflib
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* driver implementation.
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*/
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#include "iavf_iflib.h"
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#include "iavf_vc_common.h"
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/**
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* iavf_configure_queues - Configure queues
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* @sc: device softc
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*
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* Request that the PF set up our queues.
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*
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* @returns zero on success, or an error code on failure.
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*/
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int
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iavf_configure_queues(struct iavf_sc *sc)
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{
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device_t dev = sc->dev;
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struct iavf_vsi *vsi = &sc->vsi;
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if_softc_ctx_t scctx = iflib_get_softc_ctx(vsi->ctx);
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struct iavf_tx_queue *tx_que = vsi->tx_queues;
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struct iavf_rx_queue *rx_que = vsi->rx_queues;
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struct tx_ring *txr;
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struct rx_ring *rxr;
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int len, pairs;
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struct virtchnl_vsi_queue_config_info *vqci;
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struct virtchnl_queue_pair_info *vqpi;
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/* XXX: Linux PF driver wants matching ids in each tx/rx struct, so both TX/RX
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* queues of a pair need to be configured */
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pairs = max(vsi->num_tx_queues, vsi->num_rx_queues);
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len = sizeof(struct virtchnl_vsi_queue_config_info) +
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(sizeof(struct virtchnl_queue_pair_info) * pairs);
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vqci = malloc(len, M_IAVF, M_NOWAIT | M_ZERO);
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if (!vqci) {
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device_printf(dev, "%s: unable to allocate memory\n", __func__);
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return (ENOMEM);
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}
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vqci->vsi_id = sc->vsi_res->vsi_id;
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vqci->num_queue_pairs = pairs;
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vqpi = vqci->qpair;
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/* Size check is not needed here - HW max is 16 queue pairs, and we
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* can fit info for 31 of them into the AQ buffer before it overflows.
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*/
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// TODO: the above is wrong now; X722 VFs can have 256 queues
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for (int i = 0; i < pairs; i++, tx_que++, rx_que++, vqpi++) {
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txr = &tx_que->txr;
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rxr = &rx_que->rxr;
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vqpi->txq.vsi_id = vqci->vsi_id;
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vqpi->txq.queue_id = i;
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vqpi->txq.ring_len = scctx->isc_ntxd[0];
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vqpi->txq.dma_ring_addr = txr->tx_paddr;
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/* Enable Head writeback */
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if (!vsi->enable_head_writeback) {
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vqpi->txq.headwb_enabled = 0;
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vqpi->txq.dma_headwb_addr = 0;
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} else {
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vqpi->txq.headwb_enabled = 1;
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vqpi->txq.dma_headwb_addr = txr->tx_paddr +
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sizeof(struct iavf_tx_desc) * scctx->isc_ntxd[0];
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}
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vqpi->rxq.vsi_id = vqci->vsi_id;
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vqpi->rxq.queue_id = i;
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vqpi->rxq.ring_len = scctx->isc_nrxd[0];
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vqpi->rxq.dma_ring_addr = rxr->rx_paddr;
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vqpi->rxq.max_pkt_size = scctx->isc_max_frame_size;
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vqpi->rxq.databuffer_size = rxr->mbuf_sz;
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vqpi->rxq.splithdr_enabled = 0;
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}
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iavf_send_pf_msg(sc, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
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(u8 *)vqci, len);
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free(vqci, M_IAVF);
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return (0);
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}
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/**
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* iavf_map_queues - Map queues to interrupt vectors
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* @sc: device softc
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*
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* Request that the PF map queues to interrupt vectors. Misc causes, including
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* admin queue, are always mapped to vector 0.
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*
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* @returns zero on success, or an error code on failure.
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*/
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int
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iavf_map_queues(struct iavf_sc *sc)
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{
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struct virtchnl_irq_map_info *vm;
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int i, q, len;
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struct iavf_vsi *vsi = &sc->vsi;
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struct iavf_rx_queue *rx_que = vsi->rx_queues;
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if_softc_ctx_t scctx = vsi->shared;
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device_t dev = sc->dev;
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// XXX: What happens if we only get 1 MSI-X vector?
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MPASS(scctx->isc_vectors > 1);
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/* How many queue vectors, adminq uses one */
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// XXX: How do we know how many interrupt vectors we have?
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q = scctx->isc_vectors - 1;
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len = sizeof(struct virtchnl_irq_map_info) +
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(scctx->isc_vectors * sizeof(struct virtchnl_vector_map));
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vm = malloc(len, M_IAVF, M_NOWAIT);
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if (!vm) {
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device_printf(dev, "%s: unable to allocate memory\n", __func__);
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return (ENOMEM);
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}
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vm->num_vectors = scctx->isc_vectors;
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/* Queue vectors first */
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for (i = 0; i < q; i++, rx_que++) {
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vm->vecmap[i].vsi_id = sc->vsi_res->vsi_id;
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vm->vecmap[i].vector_id = i + 1; /* first is adminq */
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// TODO: Re-examine this
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vm->vecmap[i].txq_map = (1 << rx_que->rxr.me);
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vm->vecmap[i].rxq_map = (1 << rx_que->rxr.me);
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vm->vecmap[i].rxitr_idx = 0;
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vm->vecmap[i].txitr_idx = 1;
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}
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/* Misc vector last - this is only for AdminQ messages */
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vm->vecmap[i].vsi_id = sc->vsi_res->vsi_id;
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vm->vecmap[i].vector_id = 0;
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vm->vecmap[i].txq_map = 0;
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vm->vecmap[i].rxq_map = 0;
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vm->vecmap[i].rxitr_idx = 0;
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vm->vecmap[i].txitr_idx = 0;
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iavf_send_pf_msg(sc, VIRTCHNL_OP_CONFIG_IRQ_MAP,
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(u8 *)vm, len);
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free(vm, M_IAVF);
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return (0);
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}
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