1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd. */ 3 4 #include <linux/types.h> 5 #include <linux/module.h> 6 #include <linux/pci.h> 7 #include <linux/netdevice.h> 8 #include <linux/string.h> 9 #include <linux/aer.h> 10 #include <linux/etherdevice.h> 11 12 #include "ngbe.h" 13 char ngbe_driver_name[] = "ngbe"; 14 15 /* ngbe_pci_tbl - PCI Device ID Table 16 * 17 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 18 * Class, Class Mask, private data (not used) } 19 */ 20 static const struct pci_device_id ngbe_pci_tbl[] = { 21 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL_W), 0}, 22 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2), 0}, 23 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2S), 0}, 24 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4), 0}, 25 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4S), 0}, 26 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2), 0}, 27 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2S), 0}, 28 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4), 0}, 29 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4S), 0}, 30 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860LC), 0}, 31 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1), 0}, 32 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1L), 0}, 33 /* required last entry */ 34 { .device = 0 } 35 }; 36 37 static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake) 38 { 39 struct ngbe_adapter *adapter = pci_get_drvdata(pdev); 40 struct net_device *netdev = adapter->netdev; 41 42 netif_device_detach(netdev); 43 44 pci_disable_device(pdev); 45 } 46 47 static void ngbe_shutdown(struct pci_dev *pdev) 48 { 49 bool wake; 50 51 ngbe_dev_shutdown(pdev, &wake); 52 53 if (system_state == SYSTEM_POWER_OFF) { 54 pci_wake_from_d3(pdev, wake); 55 pci_set_power_state(pdev, PCI_D3hot); 56 } 57 } 58 59 /** 60 * ngbe_probe - Device Initialization Routine 61 * @pdev: PCI device information struct 62 * @ent: entry in ngbe_pci_tbl 63 * 64 * Returns 0 on success, negative on failure 65 * 66 * ngbe_probe initializes an adapter identified by a pci_dev structure. 67 * The OS initialization, configuring of the adapter private structure, 68 * and a hardware reset occur. 69 **/ 70 static int ngbe_probe(struct pci_dev *pdev, 71 const struct pci_device_id __always_unused *ent) 72 { 73 struct ngbe_adapter *adapter = NULL; 74 struct net_device *netdev; 75 int err; 76 77 err = pci_enable_device_mem(pdev); 78 if (err) 79 return err; 80 81 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 82 if (err) { 83 dev_err(&pdev->dev, 84 "No usable DMA configuration, aborting\n"); 85 goto err_pci_disable_dev; 86 } 87 88 err = pci_request_selected_regions(pdev, 89 pci_select_bars(pdev, IORESOURCE_MEM), 90 ngbe_driver_name); 91 if (err) { 92 dev_err(&pdev->dev, 93 "pci_request_selected_regions failed %d\n", err); 94 goto err_pci_disable_dev; 95 } 96 97 pci_enable_pcie_error_reporting(pdev); 98 pci_set_master(pdev); 99 100 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 101 sizeof(struct ngbe_adapter), 102 NGBE_MAX_TX_QUEUES, 103 NGBE_MAX_RX_QUEUES); 104 if (!netdev) { 105 err = -ENOMEM; 106 goto err_pci_release_regions; 107 } 108 109 SET_NETDEV_DEV(netdev, &pdev->dev); 110 111 adapter = netdev_priv(netdev); 112 adapter->netdev = netdev; 113 adapter->pdev = pdev; 114 115 adapter->io_addr = devm_ioremap(&pdev->dev, 116 pci_resource_start(pdev, 0), 117 pci_resource_len(pdev, 0)); 118 if (!adapter->io_addr) { 119 err = -EIO; 120 goto err_pci_release_regions; 121 } 122 123 netdev->features |= NETIF_F_HIGHDMA; 124 125 pci_set_drvdata(pdev, adapter); 126 127 return 0; 128 129 err_pci_release_regions: 130 pci_disable_pcie_error_reporting(pdev); 131 pci_release_selected_regions(pdev, 132 pci_select_bars(pdev, IORESOURCE_MEM)); 133 err_pci_disable_dev: 134 pci_disable_device(pdev); 135 return err; 136 } 137 138 /** 139 * ngbe_remove - Device Removal Routine 140 * @pdev: PCI device information struct 141 * 142 * ngbe_remove is called by the PCI subsystem to alert the driver 143 * that it should release a PCI device. The could be caused by a 144 * Hot-Plug event, or because the driver is going to be removed from 145 * memory. 146 **/ 147 static void ngbe_remove(struct pci_dev *pdev) 148 { 149 pci_release_selected_regions(pdev, 150 pci_select_bars(pdev, IORESOURCE_MEM)); 151 152 pci_disable_pcie_error_reporting(pdev); 153 154 pci_disable_device(pdev); 155 } 156 157 static struct pci_driver ngbe_driver = { 158 .name = ngbe_driver_name, 159 .id_table = ngbe_pci_tbl, 160 .probe = ngbe_probe, 161 .remove = ngbe_remove, 162 .shutdown = ngbe_shutdown, 163 }; 164 165 module_pci_driver(ngbe_driver); 166 167 MODULE_DEVICE_TABLE(pci, ngbe_pci_tbl); 168 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@net-swift.com>"); 169 MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver"); 170 MODULE_LICENSE("GPL"); 171