net/bnxt: use common NQ ring
[dpdk.git] / 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         if (txq && txq->cp_ring && txq->cp_ring->hw_stats)
23                 txq->cp_ring->hw_stats = NULL;
24 }
25
26 static void bnxt_tx_queue_release_mbufs(struct bnxt_tx_queue *txq)
27 {
28         struct bnxt_sw_tx_bd *sw_ring;
29         uint16_t i;
30
31         if (!txq)
32                 return;
33
34         sw_ring = txq->tx_ring->tx_buf_ring;
35         if (sw_ring) {
36                 for (i = 0; i < txq->tx_ring->tx_ring_struct->ring_size; i++) {
37                         if (sw_ring[i].mbuf) {
38                                 rte_pktmbuf_free(sw_ring[i].mbuf);
39                                 sw_ring[i].mbuf = NULL;
40                         }
41                 }
42         }
43 }
44
45 void bnxt_free_tx_mbufs(struct bnxt *bp)
46 {
47         struct bnxt_tx_queue *txq;
48         int i;
49
50         for (i = 0; i < (int)bp->tx_nr_rings; i++) {
51                 txq = bp->tx_queues[i];
52                 bnxt_tx_queue_release_mbufs(txq);
53         }
54 }
55
56 void bnxt_tx_queue_release_op(void *tx_queue)
57 {
58         struct bnxt_tx_queue *txq = (struct bnxt_tx_queue *)tx_queue;
59
60         if (txq) {
61                 if (is_bnxt_in_error(txq->bp))
62                         return;
63
64                 /* Free TX ring hardware descriptors */
65                 bnxt_tx_queue_release_mbufs(txq);
66                 bnxt_free_ring(txq->tx_ring->tx_ring_struct);
67
68                 /* Free TX completion ring hardware descriptors */
69                 bnxt_free_ring(txq->cp_ring->cp_ring_struct);
70
71                 bnxt_free_txq_stats(txq);
72                 rte_memzone_free(txq->mz);
73                 txq->mz = NULL;
74
75                 rte_free(txq->free);
76                 rte_free(txq);
77         }
78 }
79
80 int bnxt_tx_queue_setup_op(struct rte_eth_dev *eth_dev,
81                                uint16_t queue_idx,
82                                uint16_t nb_desc,
83                                unsigned int socket_id,
84                                const struct rte_eth_txconf *tx_conf)
85 {
86         struct bnxt *bp = eth_dev->data->dev_private;
87         struct bnxt_tx_queue *txq;
88         int rc = 0;
89
90         rc = is_bnxt_in_error(bp);
91         if (rc)
92                 return rc;
93
94         if (queue_idx >= bp->max_tx_rings) {
95                 PMD_DRV_LOG(ERR,
96                         "Cannot create Tx ring %d. Only %d rings available\n",
97                         queue_idx, bp->max_tx_rings);
98                 return -EINVAL;
99         }
100
101         if (!nb_desc || nb_desc > MAX_TX_DESC_CNT) {
102                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid", nb_desc);
103                 rc = -EINVAL;
104                 goto out;
105         }
106
107         if (eth_dev->data->tx_queues) {
108                 txq = eth_dev->data->tx_queues[queue_idx];
109                 if (txq) {
110                         bnxt_tx_queue_release_op(txq);
111                         txq = NULL;
112                 }
113         }
114         txq = rte_zmalloc_socket("bnxt_tx_queue", sizeof(struct bnxt_tx_queue),
115                                  RTE_CACHE_LINE_SIZE, socket_id);
116         if (!txq) {
117                 PMD_DRV_LOG(ERR, "bnxt_tx_queue allocation failed!");
118                 rc = -ENOMEM;
119                 goto out;
120         }
121
122         txq->free = rte_zmalloc_socket(NULL,
123                                        sizeof(struct rte_mbuf *) * nb_desc,
124                                        RTE_CACHE_LINE_SIZE, socket_id);
125         if (!txq->free) {
126                 PMD_DRV_LOG(ERR, "allocation of tx mbuf free array failed!");
127                 rte_free(txq);
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         txq->tx_deferred_start = tx_conf->tx_deferred_start;
135
136         rc = bnxt_init_tx_ring_struct(txq, socket_id);
137         if (rc)
138                 goto out;
139
140         txq->queue_id = queue_idx;
141         txq->port_id = eth_dev->data->port_id;
142
143         /* Allocate TX ring hardware descriptors */
144         if (bnxt_alloc_rings(bp, queue_idx, txq, NULL, txq->cp_ring, NULL,
145                              "txr")) {
146                 PMD_DRV_LOG(ERR, "ring_dma_zone_reserve for tx_ring failed!");
147                 bnxt_tx_queue_release_op(txq);
148                 rc = -ENOMEM;
149                 goto out;
150         }
151
152         if (bnxt_init_one_tx_ring(txq)) {
153                 PMD_DRV_LOG(ERR, "bnxt_init_one_tx_ring failed!");
154                 bnxt_tx_queue_release_op(txq);
155                 rc = -ENOMEM;
156                 goto out;
157         }
158
159         eth_dev->data->tx_queues[queue_idx] = txq;
160
161         if (txq->tx_deferred_start)
162                 txq->tx_started = false;
163         else
164                 txq->tx_started = true;
165 out:
166         return rc;
167 }