drivers/net/ethernet/aquantia/atlantic/aq_main.c

   1 /*
   2  * aQuantia Corporation Network Driver
   3  * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  */
   9
  10 /* File aq_main.c: Main file for aQuantia Linux driver. */
  11
  12 #include "aq_main.h"
  13 #include "aq_nic.h"
  14 #include "aq_pci_func.h"
  15 #include "aq_ethtool.h"
  16 #include "hw_atl/hw_atl_a0.h"
  17 #include "hw_atl/hw_atl_b0.h"
  18
  19 #include <linux/netdevice.h>
  20 #include <linux/module.h>
  21
  22 static const struct pci_device_id aq_pci_tbl[] = {
  23         { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_0001), },
  24         { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D100), },
  25         { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D107), },
  26         { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D108), },
  27         { PCI_VDEVICE(AQUANTIA, HW_ATL_DEVICE_ID_D109), },
  28         {}
  29 };
  30
  31 MODULE_DEVICE_TABLE(pci, aq_pci_tbl);
  32
  33 MODULE_LICENSE("GPL v2");
  34 MODULE_VERSION(AQ_CFG_DRV_VERSION);
  35 MODULE_AUTHOR(AQ_CFG_DRV_AUTHOR);
  36 MODULE_DESCRIPTION(AQ_CFG_DRV_DESC);
  37
  38 static struct aq_hw_ops *aq_pci_probe_get_hw_ops_by_id(struct pci_dev *pdev)
  39 {
  40         struct aq_hw_ops *ops = NULL;
  41
  42         ops = hw_atl_a0_get_ops_by_id(pdev);
  43         if (!ops)
  44                 ops = hw_atl_b0_get_ops_by_id(pdev);
  45
  46         return ops;
  47 }
  48
  49 static int aq_ndev_open(struct net_device *ndev)
  50 {
  51         struct aq_nic_s *aq_nic = NULL;
  52         int err = 0;
  53
  54         aq_nic = aq_nic_alloc_hot(ndev);
  55         if (!aq_nic) {
  56                 err = -ENOMEM;
  57                 goto err_exit;
  58         }
  59         err = aq_nic_init(aq_nic);
  60         if (err < 0)
  61                 goto err_exit;
  62         err = aq_nic_start(aq_nic);
  63         if (err < 0)
  64                 goto err_exit;
  65
  66 err_exit:
  67         if (err < 0)
  68                 aq_nic_deinit(aq_nic);
  69         return err;
  70 }
  71
  72 static int aq_ndev_close(struct net_device *ndev)
  73 {
  74         int err = 0;
  75         struct aq_nic_s *aq_nic = netdev_priv(ndev);
  76
  77         err = aq_nic_stop(aq_nic);
  78         if (err < 0)
  79                 goto err_exit;
  80         aq_nic_deinit(aq_nic);
  81         aq_nic_free_hot_resources(aq_nic);
  82
  83 err_exit:
  84         return err;
  85 }
  86
  87 static int aq_ndev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
  88 {
  89         struct aq_nic_s *aq_nic = netdev_priv(ndev);
  90
  91         return aq_nic_xmit(aq_nic, skb);
  92 }
  93
  94 static int aq_ndev_change_mtu(struct net_device *ndev, int new_mtu)
  95 {
  96         struct aq_nic_s *aq_nic = netdev_priv(ndev);
  97         int err = aq_nic_set_mtu(aq_nic, new_mtu + ETH_HLEN);
  98
  99         if (err < 0)
 100                 goto err_exit;
 101
 102         if (netif_running(ndev)) {
 103                 aq_ndev_close(ndev);
 104                 aq_ndev_open(ndev);
 105         }
 106
 107 err_exit:
 108         return err;
 109 }
 110
 111 static int aq_ndev_set_features(struct net_device *ndev,
 112                                 netdev_features_t features)
 113 {
 114         struct aq_nic_s *aq_nic = netdev_priv(ndev);
 115         struct aq_nic_cfg_s *aq_cfg = aq_nic_get_cfg(aq_nic);
 116         bool is_lro = false;
 117
 118         if (aq_cfg->hw_features & NETIF_F_LRO) {
 119                 is_lro = features & NETIF_F_LRO;
 120
 121                 if (aq_cfg->is_lro != is_lro) {
 122                         aq_cfg->is_lro = is_lro;
 123
 124                         if (netif_running(ndev)) {
 125                                 aq_ndev_close(ndev);
 126                                 aq_ndev_open(ndev);
 127                         }
 128                 }
 129         }
 130
 131         return 0;
 132 }
 133
 134 static int aq_ndev_set_mac_address(struct net_device *ndev, void *addr)
 135 {
 136         struct aq_nic_s *aq_nic = netdev_priv(ndev);
 137         int err = 0;
 138
 139         err = eth_mac_addr(ndev, addr);
 140         if (err < 0)
 141                 goto err_exit;
 142         err = aq_nic_set_mac(aq_nic, ndev);
 143         if (err < 0)
 144                 goto err_exit;
 145
 146 err_exit:
 147         return err;
 148 }
 149
 150 static void aq_ndev_set_multicast_settings(struct net_device *ndev)
 151 {
 152         struct aq_nic_s *aq_nic = netdev_priv(ndev);
 153         int err = 0;
 154
 155         err = aq_nic_set_packet_filter(aq_nic, ndev->flags);
 156         if (err < 0)
 157                 goto err_exit;
 158
 159         if (netdev_mc_count(ndev)) {
 160                 err = aq_nic_set_multicast_list(aq_nic, ndev);
 161                 if (err < 0)
 162                         goto err_exit;
 163         }
 164
 165 err_exit:;
 166 }
 167
 168 static const struct net_device_ops aq_ndev_ops = {
 169         .ndo_open = aq_ndev_open,
 170         .ndo_stop = aq_ndev_close,
 171         .ndo_start_xmit = aq_ndev_start_xmit,
 172         .ndo_set_rx_mode = aq_ndev_set_multicast_settings,
 173         .ndo_change_mtu = aq_ndev_change_mtu,
 174         .ndo_set_mac_address = aq_ndev_set_mac_address,
 175         .ndo_set_features = aq_ndev_set_features
 176 };
 177
 178 static int aq_pci_probe(struct pci_dev *pdev,
 179                         const struct pci_device_id *pci_id)
 180 {
 181         struct aq_hw_ops *aq_hw_ops = NULL;
 182         struct aq_pci_func_s *aq_pci_func = NULL;
 183         int err = 0;
 184
 185         err = pci_enable_device(pdev);
 186         if (err < 0)
 187                 goto err_exit;
 188         aq_hw_ops = aq_pci_probe_get_hw_ops_by_id(pdev);
 189         aq_pci_func = aq_pci_func_alloc(aq_hw_ops, pdev,
 190                                         &aq_ndev_ops, &aq_ethtool_ops);
 191         if (!aq_pci_func) {
 192                 err = -ENOMEM;
 193                 goto err_exit;
 194         }
 195         err = aq_pci_func_init(aq_pci_func);
 196         if (err < 0)
 197                 goto err_exit;
 198
 199 err_exit:
 200         if (err < 0) {
 201                 if (aq_pci_func)
 202                         aq_pci_func_free(aq_pci_func);
 203         }
 204         return err;
 205 }
 206
 207 static void aq_pci_remove(struct pci_dev *pdev)
 208 {
 209         struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev);
 210
 211         aq_pci_func_deinit(aq_pci_func);
 212         aq_pci_func_free(aq_pci_func);
 213 }
 214
 215 static int aq_pci_suspend(struct pci_dev *pdev, pm_message_t pm_msg)
 216 {
 217         struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev);
 218
 219         return aq_pci_func_change_pm_state(aq_pci_func, &pm_msg);
 220 }
 221
 222 static int aq_pci_resume(struct pci_dev *pdev)
 223 {
 224         struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev);
 225         pm_message_t pm_msg = PMSG_RESTORE;
 226
 227         return aq_pci_func_change_pm_state(aq_pci_func, &pm_msg);
 228 }
 229
 230 static struct pci_driver aq_pci_ops = {
 231         .name = AQ_CFG_DRV_NAME,
 232         .id_table = aq_pci_tbl,
 233         .probe = aq_pci_probe,
 234         .remove = aq_pci_remove,
 235         .suspend = aq_pci_suspend,
 236         .resume = aq_pci_resume,
 237 };
 238
 239 module_pci_driver(aq_pci_ops);