drivers/net/bnxt/bnxt_txq.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <inttypes.h>
   7
   8 #include <rte_malloc.h>
   9
  10 #include "bnxt.h"
  11 #include "bnxt_cpr.h"
  12 #include "bnxt_ring.h"
  13 #include "bnxt_txq.h"
  14 #include "bnxt_txr.h"
  15
  16 /*
  17  * TX Queues
  18  */
  19
  20 void bnxt_free_txq_stats(struct bnxt_tx_queue *txq)
  21 {
  22         struct bnxt_cp_ring_info *cpr = txq->cp_ring;
  23
  24         if (cpr->hw_stats)
  25                 cpr->hw_stats = NULL;
  26 }
  27
  28 static void bnxt_tx_queue_release_mbufs(struct bnxt_tx_queue *txq)
  29 {
  30         struct bnxt_sw_tx_bd *sw_ring;
  31         uint16_t i;
  32
  33         sw_ring = txq->tx_ring->tx_buf_ring;
  34         if (sw_ring) {
  35                 for (i = 0; i < txq->tx_ring->tx_ring_struct->ring_size; i++) {
  36                         if (sw_ring[i].mbuf) {
  37                                 rte_pktmbuf_free(sw_ring[i].mbuf);
  38                                 sw_ring[i].mbuf = NULL;
  39                         }
  40                 }
  41         }
  42 }
  43
  44 void bnxt_free_tx_mbufs(struct bnxt *bp)
  45 {
  46         struct bnxt_tx_queue *txq;
  47         int i;
  48
  49         for (i = 0; i < (int)bp->tx_nr_rings; i++) {
  50                 txq = bp->tx_queues[i];
  51                 bnxt_tx_queue_release_mbufs(txq);
  52         }
  53 }
  54
  55 void bnxt_tx_queue_release_op(void *tx_queue)
  56 {
  57         struct bnxt_tx_queue *txq = (struct bnxt_tx_queue *)tx_queue;
  58
  59         if (txq) {
  60                 /* Free TX ring hardware descriptors */
  61                 bnxt_tx_queue_release_mbufs(txq);
  62                 bnxt_free_ring(txq->tx_ring->tx_ring_struct);
  63
  64                 /* Free TX completion ring hardware descriptors */
  65                 bnxt_free_ring(txq->cp_ring->cp_ring_struct);
  66
  67                 bnxt_free_txq_stats(txq);
  68
  69                 rte_free(txq);
  70         }
  71 }
  72
  73 int bnxt_tx_queue_setup_op(struct rte_eth_dev *eth_dev,
  74                                uint16_t queue_idx,
  75                                uint16_t nb_desc,
  76                                unsigned int socket_id,
  77                                const struct rte_eth_txconf *tx_conf)
  78 {
  79         struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
  80         struct bnxt_tx_queue *txq;
  81         int rc = 0;
  82
  83         if (queue_idx >= bp->max_tx_rings) {
  84                 PMD_DRV_LOG(ERR,
  85                         "Cannot create Tx ring %d. Only %d rings available\n",
  86                         queue_idx, bp->max_tx_rings);
  87                 return -ENOSPC;
  88         }
  89
  90         if (!nb_desc || nb_desc > MAX_TX_DESC_CNT) {
  91                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid", nb_desc);
  92                 rc = -EINVAL;
  93                 goto out;
  94         }
  95
  96         if (eth_dev->data->tx_queues) {
  97                 txq = eth_dev->data->tx_queues[queue_idx];
  98                 if (txq) {
  99                         bnxt_tx_queue_release_op(txq);
 100                         txq = NULL;
 101                 }
 102         }
 103         txq = rte_zmalloc_socket("bnxt_tx_queue", sizeof(struct bnxt_tx_queue),
 104                                  RTE_CACHE_LINE_SIZE, socket_id);
 105         if (!txq) {
 106                 PMD_DRV_LOG(ERR, "bnxt_tx_queue allocation failed!");
 107                 rc = -ENOMEM;
 108                 goto out;
 109         }
 110         txq->bp = bp;
 111         txq->nb_tx_desc = nb_desc;
 112         txq->tx_free_thresh = tx_conf->tx_free_thresh;
 113
 114         rc = bnxt_init_tx_ring_struct(txq, socket_id);
 115         if (rc)
 116                 goto out;
 117
 118         txq->queue_id = queue_idx;
 119         txq->port_id = eth_dev->data->port_id;
 120
 121         /* Allocate TX ring hardware descriptors */
 122         if (bnxt_alloc_rings(bp, queue_idx, txq->tx_ring, NULL, txq->cp_ring,
 123                         "txr")) {
 124                 PMD_DRV_LOG(ERR, "ring_dma_zone_reserve for tx_ring failed!");
 125                 bnxt_tx_queue_release_op(txq);
 126                 rc = -ENOMEM;
 127                 goto out;
 128         }
 129
 130         if (bnxt_init_one_tx_ring(txq)) {
 131                 PMD_DRV_LOG(ERR, "bnxt_init_one_tx_ring failed!");
 132                 bnxt_tx_queue_release_op(txq);
 133                 rc = -ENOMEM;
 134                 goto out;
 135         }
 136
 137         eth_dev->data->tx_queues[queue_idx] = txq;
 138
 139 out:
 140         return rc;
 141 }