Imported Upstream version 16.07-rc1

[deb_dpdk.git] / drivers / net / bnxt / bnxt_txq.c

diff --git a/drivers/net/bnxt/bnxt_txq.c b/drivers/net/bnxt/bnxt_txq.c
new file mode 100644 (file)
index 0000000..99ddddd
--- /dev/null
+++ b/drivers/net/bnxt/bnxt_txq.c
@@ -0,0 +1,162 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) Broadcom Limited.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Broadcom Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   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.
+ */
+
+#include <inttypes.h>
+
+#include <rte_malloc.h>
+
+#include "bnxt.h"
+#include "bnxt_cpr.h"
+#include "bnxt_ring.h"
+#include "bnxt_txq.h"
+#include "bnxt_txr.h"
+
+/*
+ * TX Queues
+ */
+
+void bnxt_free_txq_stats(struct bnxt_tx_queue *txq)
+{
+       struct bnxt_cp_ring_info *cpr = txq->cp_ring;
+
+       if (cpr->hw_stats)
+               cpr->hw_stats = NULL;
+}
+
+static void bnxt_tx_queue_release_mbufs(struct bnxt_tx_queue *txq)
+{
+       struct bnxt_sw_tx_bd *sw_ring;
+       uint16_t i;
+
+       sw_ring = txq->tx_ring->tx_buf_ring;
+       if (sw_ring) {
+               for (i = 0; i < txq->tx_ring->tx_ring_struct->ring_size; i++) {
+                       if (sw_ring[i].mbuf) {
+                               rte_pktmbuf_free(sw_ring[i].mbuf);
+                               sw_ring[i].mbuf = NULL;
+                       }
+               }
+       }
+}
+
+void bnxt_free_tx_mbufs(struct bnxt *bp)
+{
+       struct bnxt_tx_queue *txq;
+       int i;
+
+       for (i = 0; i < (int)bp->tx_nr_rings; i++) {
+               txq = bp->tx_queues[i];
+               bnxt_tx_queue_release_mbufs(txq);
+       }
+}
+
+void bnxt_tx_queue_release_op(void *tx_queue)
+{
+       struct bnxt_tx_queue *txq = (struct bnxt_tx_queue *)tx_queue;
+
+       if (txq) {
+               /* Free TX ring hardware descriptors */
+               bnxt_tx_queue_release_mbufs(txq);
+               bnxt_free_ring(txq->tx_ring->tx_ring_struct);
+
+               /* Free TX completion ring hardware descriptors */
+               bnxt_free_ring(txq->cp_ring->cp_ring_struct);
+
+               bnxt_free_txq_stats(txq);
+
+               rte_free(txq);
+       }
+}
+
+int bnxt_tx_queue_setup_op(struct rte_eth_dev *eth_dev,
+                              uint16_t queue_idx,
+                              uint16_t nb_desc,
+                              unsigned int socket_id,
+                              const struct rte_eth_txconf *tx_conf)
+{
+       struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
+       struct bnxt_tx_queue *txq;
+       int rc = 0;
+
+       if (!nb_desc || nb_desc > MAX_TX_DESC_CNT) {
+               RTE_LOG(ERR, PMD, "nb_desc %d is invalid", nb_desc);
+               rc = -EINVAL;
+               goto out;
+       }
+
+       if (eth_dev->data->tx_queues) {
+               txq = eth_dev->data->tx_queues[queue_idx];
+               if (txq) {
+                       bnxt_tx_queue_release_op(txq);
+                       txq = NULL;
+               }
+       }
+       txq = rte_zmalloc_socket("bnxt_tx_queue", sizeof(struct bnxt_tx_queue),
+                                RTE_CACHE_LINE_SIZE, socket_id);
+       if (!txq) {
+               RTE_LOG(ERR, PMD, "bnxt_tx_queue allocation failed!");
+               rc = -ENOMEM;
+               goto out;
+       }
+       txq->bp = bp;
+       txq->nb_tx_desc = nb_desc;
+       txq->tx_free_thresh = tx_conf->tx_free_thresh;
+
+       rc = bnxt_init_tx_ring_struct(txq, socket_id);
+       if (rc)
+               goto out;
+
+       txq->queue_id = queue_idx;
+       txq->port_id = eth_dev->data->port_id;
+
+       /* Allocate TX ring hardware descriptors */
+       if (bnxt_alloc_rings(bp, queue_idx, txq->tx_ring, NULL, txq->cp_ring,
+                       "txr")) {
+               RTE_LOG(ERR, PMD, "ring_dma_zone_reserve for tx_ring failed!");
+               bnxt_tx_queue_release_op(txq);
+               rc = -ENOMEM;
+               goto out;
+       }
+
+       if (bnxt_init_one_tx_ring(txq)) {
+               RTE_LOG(ERR, PMD, "bnxt_init_one_tx_ring failed!");
+               bnxt_tx_queue_release_op(txq);
+               rc = -ENOMEM;
+               goto out;
+       }
+
+       eth_dev->data->tx_queues[queue_idx] = txq;
+
+out:
+       return rc;
+}