ceph/src/dpdk/drivers/net/bnxt/bnxt_txq.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) Broadcom Limited.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Broadcom Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <inttypes.h>
  35
  36 #include <rte_malloc.h>
  37
  38 #include "bnxt.h"
  39 #include "bnxt_cpr.h"
  40 #include "bnxt_ring.h"
  41 #include "bnxt_txq.h"
  42 #include "bnxt_txr.h"
  43
  44 /*
  45  * TX Queues
  46  */
  47
  48 void bnxt_free_txq_stats(struct bnxt_tx_queue *txq)
  49 {
  50         struct bnxt_cp_ring_info *cpr = txq->cp_ring;
  51
  52         if (cpr->hw_stats)
  53                 cpr->hw_stats = NULL;
  54 }
  55
  56 static void bnxt_tx_queue_release_mbufs(struct bnxt_tx_queue *txq)
  57 {
  58         struct bnxt_sw_tx_bd *sw_ring;
  59         uint16_t i;
  60
  61         sw_ring = txq->tx_ring->tx_buf_ring;
  62         if (sw_ring) {
  63                 for (i = 0; i < txq->tx_ring->tx_ring_struct->ring_size; i++) {
  64                         if (sw_ring[i].mbuf) {
  65                                 rte_pktmbuf_free(sw_ring[i].mbuf);
  66                                 sw_ring[i].mbuf = NULL;
  67                         }
  68                 }
  69         }
  70 }
  71
  72 void bnxt_free_tx_mbufs(struct bnxt *bp)
  73 {
  74         struct bnxt_tx_queue *txq;
  75         int i;
  76
  77         for (i = 0; i < (int)bp->tx_nr_rings; i++) {
  78                 txq = bp->tx_queues[i];
  79                 bnxt_tx_queue_release_mbufs(txq);
  80         }
  81 }
  82
  83 void bnxt_tx_queue_release_op(void *tx_queue)
  84 {
  85         struct bnxt_tx_queue *txq = (struct bnxt_tx_queue *)tx_queue;
  86
  87         if (txq) {
  88                 /* Free TX ring hardware descriptors */
  89                 bnxt_tx_queue_release_mbufs(txq);
  90                 bnxt_free_ring(txq->tx_ring->tx_ring_struct);
  91
  92                 /* Free TX completion ring hardware descriptors */
  93                 bnxt_free_ring(txq->cp_ring->cp_ring_struct);
  94
  95                 bnxt_free_txq_stats(txq);
  96
  97                 rte_free(txq);
  98         }
  99 }
 100
 101 int bnxt_tx_queue_setup_op(struct rte_eth_dev *eth_dev,
 102                                uint16_t queue_idx,
 103                                uint16_t nb_desc,
 104                                unsigned int socket_id,
 105                                const struct rte_eth_txconf *tx_conf)
 106 {
 107         struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
 108         struct bnxt_tx_queue *txq;
 109         int rc = 0;
 110
 111         if (!nb_desc || nb_desc > MAX_TX_DESC_CNT) {
 112                 RTE_LOG(ERR, PMD, "nb_desc %d is invalid", nb_desc);
 113                 rc = -EINVAL;
 114                 goto out;
 115         }
 116
 117         if (eth_dev->data->tx_queues) {
 118                 txq = eth_dev->data->tx_queues[queue_idx];
 119                 if (txq) {
 120                         bnxt_tx_queue_release_op(txq);
 121                         txq = NULL;
 122                 }
 123         }
 124         txq = rte_zmalloc_socket("bnxt_tx_queue", sizeof(struct bnxt_tx_queue),
 125                                  RTE_CACHE_LINE_SIZE, socket_id);
 126         if (!txq) {
 127                 RTE_LOG(ERR, PMD, "bnxt_tx_queue allocation failed!");
 128                 rc = -ENOMEM;
 129                 goto out;
 130         }
 131         txq->bp = bp;
 132         txq->nb_tx_desc = nb_desc;
 133         txq->tx_free_thresh = tx_conf->tx_free_thresh;
 134
 135         rc = bnxt_init_tx_ring_struct(txq, socket_id);
 136         if (rc)
 137                 goto out;
 138
 139         txq->queue_id = queue_idx;
 140         txq->port_id = eth_dev->data->port_id;
 141
 142         /* Allocate TX ring hardware descriptors */
 143         if (bnxt_alloc_rings(bp, queue_idx, txq->tx_ring, NULL, txq->cp_ring,
 144                         "txr")) {
 145                 RTE_LOG(ERR, PMD, "ring_dma_zone_reserve for tx_ring failed!");
 146                 bnxt_tx_queue_release_op(txq);
 147                 rc = -ENOMEM;
 148                 goto out;
 149         }
 150
 151         if (bnxt_init_one_tx_ring(txq)) {
 152                 RTE_LOG(ERR, PMD, "bnxt_init_one_tx_ring failed!");
 153                 bnxt_tx_queue_release_op(txq);
 154                 rc = -ENOMEM;
 155                 goto out;
 156         }
 157
 158         eth_dev->data->tx_queues[queue_idx] = txq;
 159
 160 out:
 161         return rc;
 162 }