/* SPDX-License-Identifier: BSD-3-Clause
*
- * Copyright (c) 2016-2018 Solarflare Communications Inc.
- * All rights reserved.
+ * Copyright(c) 2019-2021 Xilinx, Inc.
+ * Copyright(c) 2016-2019 Solarflare Communications Inc.
*
* 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 <ethdev_driver.h>
#include "efx.h"
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;
efx_evq_t *common;
const efx_ev_callbacks_t *callbacks;
unsigned int read_ptr;
+ unsigned int read_ptr_primed;
boolean_t exception;
efsys_mem_t mem;
struct sfc_dp_rxq *dp_rxq;
unsigned int entries;
};
+static inline sfc_sw_index_t
+sfc_mgmt_evq_sw_index(__rte_unused const struct sfc_adapter_shared *sas)
+{
+ return 0;
+}
+
+/* Return the number of Rx queues reserved for driver's internal use */
+static inline unsigned int
+sfc_nb_reserved_rxq(const struct sfc_adapter_shared *sas)
+{
+ return sfc_nb_counter_rxq(sas) + sfc_repr_nb_rxq(sas);
+}
+
+/* Return the number of Tx queues reserved for driver's internal use */
+static inline unsigned int
+sfc_nb_txq_reserved(const struct sfc_adapter_shared *sas)
+{
+ return sfc_repr_nb_txq(sas);
+}
+
+static inline unsigned int
+sfc_nb_reserved_evq(const struct sfc_adapter_shared *sas)
+{
+ /* An EvQ is required for each reserved Rx/Tx queue */
+ return 1 + sfc_nb_reserved_rxq(sas) + sfc_nb_txq_reserved(sas);
+}
+
+/*
+ * The mapping functions that return SW index of a specific reserved
+ * queue rely on the relative order of reserved queues. Some reserved
+ * queues are optional, and if they are disabled or not supported, then
+ * the function for that specific reserved queue will return previous
+ * valid index of a reserved queue in the dependency chain or
+ * SFC_SW_INDEX_INVALID if it is the first reserved queue in the chain.
+ * If at least one of the reserved queues in the chain is enabled, then
+ * the corresponding function will give valid SW index, even if previous
+ * functions in the chain returned SFC_SW_INDEX_INVALID, since this value
+ * is one less than the first valid SW index.
+ *
+ * The dependency mechanism is utilized to avoid regid defines for SW indices
+ * for reserved queues and to allow these indices to shrink and make space
+ * for ethdev queue indices when some of the reserved queues are disabled.
+ */
+
+static inline sfc_sw_index_t
+sfc_counters_rxq_sw_index(const struct sfc_adapter_shared *sas)
+{
+ return sas->counters_rxq_allocated ? 0 : SFC_SW_INDEX_INVALID;
+}
+
+static inline sfc_sw_index_t
+sfc_repr_rxq_sw_index(const struct sfc_adapter_shared *sas,
+ unsigned int repr_queue_id)
+{
+ return sfc_counters_rxq_sw_index(sas) + sfc_repr_nb_rxq(sas) +
+ repr_queue_id;
+}
+
+static inline sfc_sw_index_t
+sfc_repr_txq_sw_index(const struct sfc_adapter_shared *sas,
+ unsigned int repr_queue_id)
+{
+ /* Reserved TxQ for representors is the first reserved TxQ */
+ return sfc_repr_available(sas) ? repr_queue_id : SFC_SW_INDEX_INVALID;
+}
+
/*
* Functions below define event queue to transmit/receive queue and vice
* versa mapping.
+ * SFC_ETHDEV_QID_INVALID is returned when sw_index is converted to
+ * ethdev_qid, but sw_index represents a reserved queue for driver's
+ * internal use.
* 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.
+ * When counters are supported, one Rx event queue is reserved.
+ * When representors are supported, Rx and Tx event queues are reserved.
+ * Rx event queues follow reserved event queues.
* 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)
+static inline sfc_ethdev_qid_t
+sfc_ethdev_rx_qid_by_rxq_sw_index(struct sfc_adapter_shared *sas,
+ sfc_sw_index_t rxq_sw_index)
+{
+ if (rxq_sw_index < sfc_nb_reserved_rxq(sas))
+ return SFC_ETHDEV_QID_INVALID;
+
+ return rxq_sw_index - sfc_nb_reserved_rxq(sas);
+}
+
+static inline sfc_sw_index_t
+sfc_rxq_sw_index_by_ethdev_rx_qid(struct sfc_adapter_shared *sas,
+ sfc_ethdev_qid_t ethdev_qid)
{
- return 1 + rxq_sw_index;
+ return sfc_nb_reserved_rxq(sas) + ethdev_qid;
}
-static inline unsigned int
-sfc_evq_index_by_txq_sw_index(struct sfc_adapter *sa, unsigned int txq_sw_index)
+static inline sfc_sw_index_t
+sfc_evq_sw_index_by_rxq_sw_index(struct sfc_adapter *sa,
+ sfc_sw_index_t rxq_sw_index)
+{
+ struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
+ sfc_ethdev_qid_t ethdev_qid;
+
+ ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, rxq_sw_index);
+ if (ethdev_qid == SFC_ETHDEV_QID_INVALID) {
+ /* One EvQ is reserved for management */
+ return 1 + rxq_sw_index;
+ }
+
+ return sfc_nb_reserved_evq(sas) + ethdev_qid;
+}
+
+static inline sfc_ethdev_qid_t
+sfc_ethdev_tx_qid_by_txq_sw_index(struct sfc_adapter_shared *sas,
+ sfc_sw_index_t txq_sw_index)
+{
+ if (txq_sw_index < sfc_nb_txq_reserved(sas))
+ return SFC_ETHDEV_QID_INVALID;
+
+ return txq_sw_index - sfc_nb_txq_reserved(sas);
+}
+
+static inline sfc_sw_index_t
+sfc_txq_sw_index_by_ethdev_tx_qid(struct sfc_adapter_shared *sas,
+ sfc_ethdev_qid_t ethdev_qid)
+{
+ return sfc_nb_txq_reserved(sas) + ethdev_qid;
+}
+
+static inline sfc_sw_index_t
+sfc_evq_sw_index_by_txq_sw_index(struct sfc_adapter *sa,
+ sfc_sw_index_t txq_sw_index)
{
- return 1 + sa->eth_dev->data->nb_rx_queues + txq_sw_index;
+ struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
+ sfc_ethdev_qid_t ethdev_qid;
+
+ ethdev_qid = sfc_ethdev_tx_qid_by_txq_sw_index(sas, txq_sw_index);
+ if (ethdev_qid == SFC_ETHDEV_QID_INVALID) {
+ return sfc_nb_reserved_evq(sas) - sfc_nb_txq_reserved(sas) +
+ txq_sw_index;
+ }
+
+ return sfc_nb_reserved_evq(sas) + sa->eth_dev->data->nb_rx_queues +
+ ethdev_qid;
}
int sfc_ev_attach(struct sfc_adapter *sa);
git.droids-corp.org / dpdk.git / blobdiff