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 hbg_spec_max_frame_len(struct hbg_priv * priv,enum hbg_dir dir)10static 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 hbg_get_spec_fifo_max_num(struct hbg_priv * priv,enum hbg_dir dir)17static 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 hbg_fifo_is_full(struct hbg_priv * priv,enum hbg_dir dir)24static 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 hbg_get_queue_used_num(struct hbg_ring * ring)30static inline u32 hbg_get_queue_used_num(struct hbg_ring *ring) 31 { 32 u32 len = READ_ONCE(ring->len); 33 34 if (!len) 35 return 0; 36 37 return (READ_ONCE(ring->ntu) + len - READ_ONCE(ring->ntc)) % len; 38 } 39 40 netdev_tx_t hbg_net_start_xmit(struct sk_buff *skb, struct net_device *netdev); 41 int hbg_txrx_init(struct hbg_priv *priv); 42 void hbg_txrx_uninit(struct hbg_priv *priv); 43 44 #endif 45