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/* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2016-2018 Solarflare Communications Inc.
* All rights reserved.
*
* This software was jointly developed between OKTET Labs (under contract
* for Solarflare) and Solarflare Communications, Inc.
*/
#ifndef _SFC_EV_H_
#define _SFC_EV_H_
#include <rte_ethdev_driver.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_ */
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