hisilicon/hns/hns_enet.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003  * Copyright (c) 2014-2015 Hisilicon Limited.
0004  */
0005
0006 #ifndef __HNS_ENET_H
0007 #define __HNS_ENET_H
0008
0009 #include <linux/netdevice.h>
0010 #include <linux/of_net.h>
0011 #include <linux/of_mdio.h>
0012 #include <linux/timer.h>
0013 #include <linux/workqueue.h>
0014
0015 #include "hnae.h"
0016
0017 #define HNS_DEBUG_OFFSET    6
0018 #define HNS_SRV_OFFSET      2
0019
0020 enum hns_nic_state {
0021     NIC_STATE_TESTING = 0,
0022     NIC_STATE_RESETTING,
0023     NIC_STATE_REINITING,
0024     NIC_STATE_DOWN,
0025     NIC_STATE_DISABLED,
0026     NIC_STATE_REMOVING,
0027     NIC_STATE_SERVICE_INITED,
0028     NIC_STATE_SERVICE_SCHED,
0029     NIC_STATE2_RESET_REQUESTED,
0030     NIC_STATE_MAX
0031 };
0032
0033 struct hns_nic_ring_data {
0034     struct hnae_ring *ring;
0035     struct napi_struct napi;
0036     cpumask_t mask; /* affinity mask */
0037     u32 queue_index;
0038     int (*poll_one)(struct hns_nic_ring_data *, int, void *);
0039     void (*ex_process)(struct hns_nic_ring_data *, struct sk_buff *);
0040     bool (*fini_process)(struct hns_nic_ring_data *);
0041 };
0042
0043 /* compatible the difference between two versions */
0044 struct hns_nic_ops {
0045     void (*fill_desc)(struct hnae_ring *ring, void *priv,
0046               int size, dma_addr_t dma, int frag_end,
0047               int buf_num, enum hns_desc_type type, int mtu);
0048     int (*maybe_stop_tx)(struct sk_buff **out_skb,
0049                  int *bnum, struct hnae_ring *ring);
0050     void (*get_rxd_bnum)(u32 bnum_flag, int *out_bnum);
0051 };
0052
0053 struct hns_nic_priv {
0054     const struct fwnode_handle      *fwnode;
0055     u32 enet_ver;
0056     u32 port_id;
0057     int phy_mode;
0058     int phy_led_val;
0059     struct net_device *netdev;
0060     struct device *dev;
0061     struct hnae_handle *ae_handle;
0062
0063     struct hns_nic_ops ops;
0064
0065     /* the cb for nic to manage the ring buffer, the first half of the
0066      * array is for tx_ring and vice versa for the second half
0067      */
0068     struct hns_nic_ring_data *ring_data;
0069
0070     /* The most recently read link state */
0071     int link;
0072     u64 tx_timeout_count;
0073
0074     unsigned long state;
0075
0076     struct timer_list service_timer;
0077
0078     struct work_struct service_task;
0079
0080     struct notifier_block notifier_block;
0081 };
0082
0083 #define tx_ring_data(priv, idx) ((priv)->ring_data[idx])
0084 #define rx_ring_data(priv, idx) \
0085     ((priv)->ring_data[(priv)->ae_handle->q_num + (idx)])
0086
0087 void hns_ethtool_set_ops(struct net_device *ndev);
0088 void hns_nic_net_reset(struct net_device *ndev);
0089 void hns_nic_net_reinit(struct net_device *netdev);
0090 int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h);
0091 netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
0092                 struct sk_buff *skb,
0093                 struct hns_nic_ring_data *ring_data);
0094
0095 #endif  /**__HNS_ENET_H */