diff options
Diffstat (limited to 'drivers/net/sfc/sfc_ev.h')
| -rw-r--r-- | drivers/net/sfc/sfc_ev.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/net/sfc/sfc_ev.h b/drivers/net/sfc/sfc_ev.h new file mode 100644 index 00000000..065defe0 --- /dev/null +++ b/drivers/net/sfc/sfc_ev.h @@ -0,0 +1,129 @@ +/*- + * BSD LICENSE + * + * Copyright (c) 2016-2017 Solarflare Communications Inc. + * All rights reserved. + * + * This software was jointly developed between OKTET Labs (under contract + * for Solarflare) and Solarflare Communications, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. 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. + * + * 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. + */ + +#ifndef _SFC_EV_H_ +#define _SFC_EV_H_ + +#include <rte_ethdev.h> + +#include "efx.h" + +#include "sfc.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Number of entries in the management event queue */ +#define SFC_MGMT_EVQ_ENTRIES (EFX_EVQ_MINNEVS) + +struct sfc_adapter; +struct sfc_dp_rxq; +struct sfc_dp_txq; + +enum sfc_evq_state { + SFC_EVQ_UNINITIALIZED = 0, + SFC_EVQ_INITIALIZED, + SFC_EVQ_STARTING, + SFC_EVQ_STARTED, + + SFC_EVQ_NSTATES +}; + +enum sfc_evq_type { + SFC_EVQ_TYPE_MGMT = 0, + SFC_EVQ_TYPE_RX, + SFC_EVQ_TYPE_TX, + + SFC_EVQ_NTYPES +}; + +struct sfc_evq { + /* Used on datapath */ + efx_evq_t *common; + const efx_ev_callbacks_t *callbacks; + unsigned int read_ptr; + boolean_t exception; + efsys_mem_t mem; + struct sfc_dp_rxq *dp_rxq; + struct sfc_dp_txq *dp_txq; + + /* Not used on datapath */ + struct sfc_adapter *sa; + unsigned int evq_index; + enum sfc_evq_state init_state; + enum sfc_evq_type type; + unsigned int entries; +}; + +/* + * Functions below define event queue to transmit/receive queue and vice + * versa mapping. + * Own event queue is allocated for management, each Rx and each Tx queue. + * Zero event queue is used for management events. + * Rx event queues from 1 to RxQ number follow management event queue. + * Tx event queues follow Rx event queues. + */ + +static inline unsigned int +sfc_evq_index_by_rxq_sw_index(__rte_unused struct sfc_adapter *sa, + unsigned int rxq_sw_index) +{ + return 1 + rxq_sw_index; +} + +static inline unsigned int +sfc_evq_index_by_txq_sw_index(struct sfc_adapter *sa, unsigned int txq_sw_index) +{ + return 1 + sa->eth_dev->data->nb_rx_queues + txq_sw_index; +} + +int sfc_ev_attach(struct sfc_adapter *sa); +void sfc_ev_detach(struct sfc_adapter *sa); +int sfc_ev_start(struct sfc_adapter *sa); +void sfc_ev_stop(struct sfc_adapter *sa); + +int sfc_ev_qinit(struct sfc_adapter *sa, + enum sfc_evq_type type, unsigned int type_index, + unsigned int entries, int socket_id, struct sfc_evq **evqp); +void sfc_ev_qfini(struct sfc_evq *evq); +int sfc_ev_qstart(struct sfc_evq *evq, unsigned int hw_index); +void sfc_ev_qstop(struct sfc_evq *evq); + +int sfc_ev_qprime(struct sfc_evq *evq); +void sfc_ev_qpoll(struct sfc_evq *evq); + +void sfc_ev_mgmt_qpoll(struct sfc_adapter *sa); + +#ifdef __cplusplus +} +#endif +#endif /* _SFC_EV_H_ */ |