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 ndev->mtu = new_mtu; 102 103 err_exit: 104 return err; 105 } 106 107 static int aq_ndev_set_features(struct net_device *ndev, 108 netdev_features_t features) 109 { 110 struct aq_nic_s *aq_nic = netdev_priv(ndev); 111 struct aq_nic_cfg_s *aq_cfg = aq_nic_get_cfg(aq_nic); 112 bool is_lro = false; 113 114 if (aq_cfg->hw_features & NETIF_F_LRO) { 115 is_lro = features & NETIF_F_LRO; 116 117 if (aq_cfg->is_lro != is_lro) { 118 aq_cfg->is_lro = is_lro; 119 120 if (netif_running(ndev)) { 121 aq_ndev_close(ndev); 122 aq_ndev_open(ndev); 123 } 124 } 125 } 126 127 return 0; 128 } 129 130 static int aq_ndev_set_mac_address(struct net_device *ndev, void *addr) 131 { 132 struct aq_nic_s *aq_nic = netdev_priv(ndev); 133 int err = 0; 134 135 err = eth_mac_addr(ndev, addr); 136 if (err < 0) 137 goto err_exit; 138 err = aq_nic_set_mac(aq_nic, ndev); 139 if (err < 0) 140 goto err_exit; 141 142 err_exit: 143 return err; 144 } 145 146 static void aq_ndev_set_multicast_settings(struct net_device *ndev) 147 { 148 struct aq_nic_s *aq_nic = netdev_priv(ndev); 149 int err = 0; 150 151 err = aq_nic_set_packet_filter(aq_nic, ndev->flags); 152 if (err < 0) 153 goto err_exit; 154 155 if (netdev_mc_count(ndev)) { 156 err = aq_nic_set_multicast_list(aq_nic, ndev); 157 if (err < 0) 158 goto err_exit; 159 } 160 161 err_exit:; 162 } 163 164 static const struct net_device_ops aq_ndev_ops = { 165 .ndo_open = aq_ndev_open, 166 .ndo_stop = aq_ndev_close, 167 .ndo_start_xmit = aq_ndev_start_xmit, 168 .ndo_set_rx_mode = aq_ndev_set_multicast_settings, 169 .ndo_change_mtu = aq_ndev_change_mtu, 170 .ndo_set_mac_address = aq_ndev_set_mac_address, 171 .ndo_set_features = aq_ndev_set_features 172 }; 173 174 static int aq_pci_probe(struct pci_dev *pdev, 175 const struct pci_device_id *pci_id) 176 { 177 struct aq_hw_ops *aq_hw_ops = NULL; 178 struct aq_pci_func_s *aq_pci_func = NULL; 179 int err = 0; 180 181 err = pci_enable_device(pdev); 182 if (err < 0) 183 goto err_exit; 184 aq_hw_ops = aq_pci_probe_get_hw_ops_by_id(pdev); 185 aq_pci_func = aq_pci_func_alloc(aq_hw_ops, pdev, 186 &aq_ndev_ops, &aq_ethtool_ops); 187 if (!aq_pci_func) { 188 err = -ENOMEM; 189 goto err_exit; 190 } 191 err = aq_pci_func_init(aq_pci_func); 192 if (err < 0) 193 goto err_exit; 194 195 err_exit: 196 if (err < 0) { 197 if (aq_pci_func) 198 aq_pci_func_free(aq_pci_func); 199 } 200 return err; 201 } 202 203 static void aq_pci_remove(struct pci_dev *pdev) 204 { 205 struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev); 206 207 aq_pci_func_deinit(aq_pci_func); 208 aq_pci_func_free(aq_pci_func); 209 } 210 211 static int aq_pci_suspend(struct pci_dev *pdev, pm_message_t pm_msg) 212 { 213 struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev); 214 215 return aq_pci_func_change_pm_state(aq_pci_func, &pm_msg); 216 } 217 218 static int aq_pci_resume(struct pci_dev *pdev) 219 { 220 struct aq_pci_func_s *aq_pci_func = pci_get_drvdata(pdev); 221 pm_message_t pm_msg = PMSG_RESTORE; 222 223 return aq_pci_func_change_pm_state(aq_pci_func, &pm_msg); 224 } 225 226 static struct pci_driver aq_pci_ops = { 227 .name = AQ_CFG_DRV_NAME, 228 .id_table = aq_pci_tbl, 229 .probe = aq_pci_probe, 230 .remove = aq_pci_remove, 231 .suspend = aq_pci_suspend, 232 .resume = aq_pci_resume, 233 }; 234 235 module_pci_driver(aq_pci_ops); 236