4 * Copyright (c) 2016-2017 Solarflare Communications Inc.
7 * This software was jointly developed between OKTET Labs (under contract
8 * for Solarflare) and Solarflare Communications, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
13 * 1. Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 /* Number of entries in the management event queue */
42 #define SFC_MGMT_EVQ_ENTRIES (EFX_EVQ_MINNEVS)
49 SFC_EVQ_UNINITIALIZED = 0,
58 /* Used on datapath */
60 const efx_ev_callbacks_t *callbacks;
61 unsigned int read_ptr;
64 struct sfc_dp_rxq *dp_rxq;
67 /* Not used on datapath */
68 struct sfc_adapter *sa;
69 unsigned int evq_index;
70 enum sfc_evq_state init_state;
74 /* Maximum number of EVQ entries taken into account when buffer
75 * table space is allocated.
77 unsigned int max_entries;
78 /* Real number of EVQ entries, less or equal to max_entries */
80 /* Event queue creation flags */
82 /* NUMA-aware EVQ data structure used on datapath */
87 * Functions below define event queue to transmit/receive queue and vice
91 static inline unsigned int
92 sfc_ev_qcount(struct sfc_adapter *sa)
94 const struct rte_eth_dev_data *dev_data = sa->eth_dev->data;
97 * One management EVQ for global events.
98 * Own EVQ for each Tx and Rx queue.
100 return 1 + dev_data->nb_rx_queues + dev_data->nb_tx_queues;
103 static inline unsigned int
104 sfc_evq_max_entries(struct sfc_adapter *sa, unsigned int sw_index)
106 unsigned int max_entries;
108 if (sw_index == sa->mgmt_evq_index)
109 max_entries = SFC_MGMT_EVQ_ENTRIES;
110 else if (sw_index <= sa->eth_dev->data->nb_rx_queues)
111 max_entries = EFX_RXQ_MAXNDESCS;
113 max_entries = efx_nic_cfg_get(sa->nic)->enc_txq_max_ndescs;
118 static inline unsigned int
119 sfc_evq_index_by_rxq_sw_index(__rte_unused struct sfc_adapter *sa,
120 unsigned int rxq_sw_index)
122 return 1 + rxq_sw_index;
125 static inline unsigned int
126 sfc_evq_index_by_txq_sw_index(struct sfc_adapter *sa, unsigned int txq_sw_index)
128 return 1 + sa->eth_dev->data->nb_rx_queues + txq_sw_index;
131 int sfc_ev_init(struct sfc_adapter *sa);
132 void sfc_ev_fini(struct sfc_adapter *sa);
133 int sfc_ev_start(struct sfc_adapter *sa);
134 void sfc_ev_stop(struct sfc_adapter *sa);
136 int sfc_ev_qinit(struct sfc_adapter *sa, unsigned int sw_index,
137 unsigned int entries, int socket_id);
138 void sfc_ev_qfini(struct sfc_adapter *sa, unsigned int sw_index);
139 int sfc_ev_qstart(struct sfc_adapter *sa, unsigned int sw_index);
140 void sfc_ev_qstop(struct sfc_adapter *sa, unsigned int sw_index);
142 int sfc_ev_qprime(struct sfc_evq *evq);
143 void sfc_ev_qpoll(struct sfc_evq *evq);
145 void sfc_ev_mgmt_qpoll(struct sfc_adapter *sa);
150 #endif /* _SFC_EV_H_ */