net/sfc: convert to new Tx offload API

[dpdk.git] / drivers / net / sfc / sfc_dp_tx.h

diff --git a/drivers/net/sfc/sfc_dp_tx.h b/drivers/net/sfc/sfc_dp_tx.h
index 1f922e5..75d72fe 100644 (file)
--- a/drivers/net/sfc/sfc_dp_tx.h
+++ b/drivers/net/sfc/sfc_dp_tx.h
@@ -1,32 +1,10 @@
-/*-
- *   BSD LICENSE
+/* SPDX-License-Identifier: BSD-3-Clause
  *
- * Copyright (c) 2016 Solarflare Communications Inc.
+ * 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.
- *
- * 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_DP_TX_H
@@ -57,16 +35,53 @@ struct sfc_dp_txq {
  * readable.
  */
 struct sfc_dp_tx_qcreate_info {
+       /** Maximum number of pushed Tx descriptors */
+       unsigned int            max_fill_level;
        /** Minimum number of unused Tx descriptors to do reap */
        unsigned int            free_thresh;
        /** Transmit queue configuration flags */
        unsigned int            flags;
+       /** Offloads enabled on the transmit queue */
+       uint64_t                offloads;
        /** Tx queue size */
        unsigned int            txq_entries;
        /** Maximum size of data in the DMA descriptor */
        uint16_t                dma_desc_size_max;
+       /** DMA-mapped Tx descriptors ring */
+       void                    *txq_hw_ring;
+       /** Associated event queue size */
+       unsigned int            evq_entries;
+       /** Hardware event ring */
+       void                    *evq_hw_ring;
+       /** The queue index in hardware (required to push right doorbell) */
+       unsigned int            hw_index;
+       /** Virtual address of the memory-mapped BAR to push Tx doorbell */
+       volatile void           *mem_bar;
 };
 
+/**
+ * Get Tx datapath specific device info.
+ *
+ * @param dev_info             Device info to be adjusted
+ */
+typedef void (sfc_dp_tx_get_dev_info_t)(struct rte_eth_dev_info *dev_info);
+
+/**
+ * Get size of transmit and event queue rings by the number of Tx
+ * descriptors.
+ *
+ * @param nb_tx_desc           Number of Tx descriptors
+ * @param txq_entries          Location for number of Tx ring entries
+ * @param evq_entries          Location for number of event ring entries
+ * @param txq_max_fill_level   Location for maximum Tx ring fill level
+ *
+ * @return 0 or positive errno.
+ */
+typedef int (sfc_dp_tx_qsize_up_rings_t)(uint16_t nb_tx_desc,
+                                        unsigned int *txq_entries,
+                                        unsigned int *evq_entries,
+                                        unsigned int *txq_max_fill_level);
+
 /**
  * Allocate and initialize datapath transmit queue.
  *
@@ -107,20 +122,42 @@ typedef int (sfc_dp_tx_qstart_t)(struct sfc_dp_txq *dp_txq,
 typedef void (sfc_dp_tx_qstop_t)(struct sfc_dp_txq *dp_txq,
                                 unsigned int *evq_read_ptr);
 
+/**
+ * Transmit event handler used during queue flush only.
+ */
+typedef bool (sfc_dp_tx_qtx_ev_t)(struct sfc_dp_txq *dp_txq, unsigned int id);
+
 /**
  * Transmit queue function called after the queue flush.
  */
 typedef void (sfc_dp_tx_qreap_t)(struct sfc_dp_txq *dp_txq);
 
+/**
+ * Check Tx descriptor status
+ */
+typedef int (sfc_dp_tx_qdesc_status_t)(struct sfc_dp_txq *dp_txq,
+                                      uint16_t offset);
+
 /** Transmit datapath definition */
 struct sfc_dp_tx {
        struct sfc_dp                   dp;
 
+       unsigned int                    features;
+#define SFC_DP_TX_FEAT_VLAN_INSERT     0x1
+#define SFC_DP_TX_FEAT_TSO             0x2
+#define SFC_DP_TX_FEAT_MULTI_SEG       0x4
+#define SFC_DP_TX_FEAT_MULTI_PROCESS   0x8
+#define SFC_DP_TX_FEAT_MULTI_POOL      0x10
+#define SFC_DP_TX_FEAT_REFCNT          0x20
+       sfc_dp_tx_get_dev_info_t        *get_dev_info;
+       sfc_dp_tx_qsize_up_rings_t      *qsize_up_rings;
        sfc_dp_tx_qcreate_t             *qcreate;
        sfc_dp_tx_qdestroy_t            *qdestroy;
        sfc_dp_tx_qstart_t              *qstart;
        sfc_dp_tx_qstop_t               *qstop;
+       sfc_dp_tx_qtx_ev_t              *qtx_ev;
        sfc_dp_tx_qreap_t               *qreap;
+       sfc_dp_tx_qdesc_status_t        *qdesc_status;
        eth_tx_burst_t                  pkt_burst;
 };
 
@@ -141,6 +178,8 @@ sfc_dp_find_tx_by_caps(struct sfc_dp_list *head, unsigned int avail_caps)
 }
 
 extern struct sfc_dp_tx sfc_efx_tx;
+extern struct sfc_dp_tx sfc_ef10_tx;
+extern struct sfc_dp_tx sfc_ef10_simple_tx;
 
 #ifdef __cplusplus
 }