1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /****************************************************************************
3  * Driver for Solarflare network controllers and boards
4  * Copyright 2018 Solarflare Communications Inc.
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms of the GNU General Public License version 2 as published
8  * by the Free Software Foundation, incorporated herein by reference.
9  */
10 
11 #ifndef EFX_TX_COMMON_H
12 #define EFX_TX_COMMON_H
13 
14 int efx_siena_probe_tx_queue(struct efx_tx_queue *tx_queue);
15 void efx_siena_init_tx_queue(struct efx_tx_queue *tx_queue);
16 void efx_siena_fini_tx_queue(struct efx_tx_queue *tx_queue);
17 void efx_siena_remove_tx_queue(struct efx_tx_queue *tx_queue);
18 
19 static inline bool efx_tx_buffer_in_use(struct efx_tx_buffer *buffer)
20 {
21 	return buffer->len || (buffer->flags & EFX_TX_BUF_OPTION);
22 }
23 
24 void efx_siena_xmit_done_check_empty(struct efx_tx_queue *tx_queue);
25 void efx_siena_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
26 
27 void efx_siena_enqueue_unwind(struct efx_tx_queue *tx_queue,
28 			      unsigned int insert_count);
29 
30 struct efx_tx_buffer *efx_siena_tx_map_chunk(struct efx_tx_queue *tx_queue,
31 					     dma_addr_t dma_addr, size_t len);
32 int efx_siena_tx_map_data(struct efx_tx_queue *tx_queue, struct sk_buff *skb,
33 			  unsigned int segment_count);
34 
35 unsigned int efx_siena_tx_max_skb_descs(struct efx_nic *efx);
36 int efx_siena_tx_tso_fallback(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
37 
38 extern bool efx_siena_separate_tx_channels;
39 #endif
40