drivers/net/ethernet/hisilicon/hns/hns_enet.h

   1 /*
   2  * Copyright (c) 2014-2015 Hisilicon Limited.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  */
   9
  10 #ifndef __HNS_ENET_H
  11 #define __HNS_ENET_H
  12
  13 #include <linux/netdevice.h>
  14 #include <linux/of_net.h>
  15 #include <linux/of_mdio.h>
  16 #include <linux/timer.h>
  17 #include <linux/workqueue.h>
  18
  19 #include "hnae.h"
  20
  21 #define HNS_DEBUG_OFFSET        6
  22 #define HNS_SRV_OFFSET          2
  23
  24 enum hns_nic_state {
  25         NIC_STATE_TESTING = 0,
  26         NIC_STATE_RESETTING,
  27         NIC_STATE_REINITING,
  28         NIC_STATE_DOWN,
  29         NIC_STATE_DISABLED,
  30         NIC_STATE_REMOVING,
  31         NIC_STATE_SERVICE_INITED,
  32         NIC_STATE_SERVICE_SCHED,
  33         NIC_STATE2_RESET_REQUESTED,
  34         NIC_STATE_MAX
  35 };
  36
  37 struct hns_nic_ring_data {
  38         struct hnae_ring *ring;
  39         struct napi_struct napi;
  40         cpumask_t mask; /* affinity mask */
  41         u32 queue_index;
  42         int (*poll_one)(struct hns_nic_ring_data *, int, void *);
  43         void (*ex_process)(struct hns_nic_ring_data *, struct sk_buff *);
  44         bool (*fini_process)(struct hns_nic_ring_data *);
  45 };
  46
  47 /* compatible the difference between two versions */
  48 struct hns_nic_ops {
  49         void (*fill_desc)(struct hnae_ring *ring, void *priv,
  50                           int size, dma_addr_t dma, int frag_end,
  51                           int buf_num, enum hns_desc_type type, int mtu);
  52         int (*maybe_stop_tx)(struct sk_buff **out_skb,
  53                              int *bnum, struct hnae_ring *ring);
  54         void (*get_rxd_bnum)(u32 bnum_flag, int *out_bnum);
  55 };
  56
  57 struct hns_nic_priv {
  58         const struct fwnode_handle      *fwnode;
  59         u32 enet_ver;
  60         u32 port_id;
  61         int phy_mode;
  62         int phy_led_val;
  63         struct net_device *netdev;
  64         struct device *dev;
  65         struct hnae_handle *ae_handle;
  66
  67         struct hns_nic_ops ops;
  68
  69         /* the cb for nic to manage the ring buffer, the first half of the
  70          * array is for tx_ring and vice versa for the second half
  71          */
  72         struct hns_nic_ring_data *ring_data;
  73
  74         /* The most recently read link state */
  75         int link;
  76         u64 tx_timeout_count;
  77
  78         unsigned long state;
  79
  80         struct timer_list service_timer;
  81
  82         struct work_struct service_task;
  83
  84         struct notifier_block notifier_block;
  85 };
  86
  87 #define tx_ring_data(priv, idx) ((priv)->ring_data[idx])
  88 #define rx_ring_data(priv, idx) \
  89         ((priv)->ring_data[(priv)->ae_handle->q_num + (idx)])
  90
  91 void hns_ethtool_set_ops(struct net_device *ndev);
  92 void hns_nic_net_reset(struct net_device *ndev);
  93 void hns_nic_net_reinit(struct net_device *netdev);
  94 int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h);
  95 netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
  96                                 struct sk_buff *skb,
  97                                 struct hns_nic_ring_data *ring_data);
  98
  99 #endif  /**__HNS_ENET_H */