drivers/net/ethernet/hisilicon/hibmcge/hbg_txrx.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /* Copyright (c) 2024 Hisilicon Limited. */
   3
   4 #ifndef __HBG_TXRX_H
   5 #define __HBG_TXRX_H
   6
   7 #include <linux/etherdevice.h>
   8 #include "hbg_hw.h"
   9
  10 static inline u32 hbg_spec_max_frame_len(struct hbg_priv *priv,
  11                                          enum hbg_dir dir)
  12 {
  13         return (dir == HBG_DIR_TX) ? priv->dev_specs.max_frame_len :
  14                 priv->dev_specs.rx_buf_size;
  15 }
  16
  17 static inline u32 hbg_get_spec_fifo_max_num(struct hbg_priv *priv,
  18                                             enum hbg_dir dir)
  19 {
  20         return (dir == HBG_DIR_TX) ? priv->dev_specs.tx_fifo_num :
  21                 priv->dev_specs.rx_fifo_num;
  22 }
  23
  24 static inline bool hbg_fifo_is_full(struct hbg_priv *priv, enum hbg_dir dir)
  25 {
  26         return hbg_hw_get_fifo_used_num(priv, dir) >=
  27                hbg_get_spec_fifo_max_num(priv, dir);
  28 }
  29
  30 static inline u32 hbg_get_queue_used_num(struct hbg_ring *ring)
  31 {
  32         return (ring->ntu + ring->len - ring->ntc) % ring->len;
  33 }
  34
  35 netdev_tx_t hbg_net_start_xmit(struct sk_buff *skb, struct net_device *netdev);
  36 int hbg_txrx_init(struct hbg_priv *priv);
  37 void hbg_txrx_uninit(struct hbg_priv *priv);
  38
  39 #endif