1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2015 - 2025 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/etherdevice.h> 10 11 #include "../libwx/wx_type.h" 12 #include "../libwx/wx_hw.h" 13 #include "../libwx/wx_lib.h" 14 #include "../libwx/wx_mbx.h" 15 #include "../libwx/wx_vf.h" 16 #include "../libwx/wx_vf_common.h" 17 #include "ngbevf_type.h" 18 19 /* ngbevf_pci_tbl - PCI Device ID Table 20 * 21 * Wildcard entries (PCI_ANY_ID) should come last 22 * Last entry must be all 0s 23 * 24 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 25 * Class, Class Mask, private data (not used) } 26 */ 27 static const struct pci_device_id ngbevf_pci_tbl[] = { 28 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL_W), 0}, 29 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A2), 0}, 30 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A2S), 0}, 31 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A4), 0}, 32 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A4S), 0}, 33 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL2), 0}, 34 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL2S), 0}, 35 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL4), 0}, 36 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL4S), 0}, 37 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860NCSI), 0}, 38 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A1), 0}, 39 { PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL1), 0}, 40 /* required last entry */ 41 { .device = 0 } 42 }; 43 44 static const struct net_device_ops ngbevf_netdev_ops = { 45 .ndo_open = wxvf_open, 46 .ndo_stop = wxvf_close, 47 .ndo_start_xmit = wx_xmit_frame, 48 .ndo_validate_addr = eth_validate_addr, 49 .ndo_set_mac_address = wx_set_mac_vf, 50 }; 51 52 static void ngbevf_set_num_queues(struct wx *wx) 53 { 54 /* Start with base case */ 55 wx->num_rx_queues = 1; 56 wx->num_tx_queues = 1; 57 } 58 59 static int ngbevf_sw_init(struct wx *wx) 60 { 61 struct net_device *netdev = wx->netdev; 62 struct pci_dev *pdev = wx->pdev; 63 int err; 64 65 /* Initialize pcie info and common capability flags */ 66 err = wx_sw_init(wx); 67 if (err < 0) 68 goto err_wx_sw_init; 69 70 /* Initialize the mailbox */ 71 err = wx_init_mbx_params_vf(wx); 72 if (err) 73 goto err_init_mbx_params; 74 75 /* Initialize the device type */ 76 wx->mac.type = wx_mac_em; 77 wx->mac.max_msix_vectors = NGBEVF_MAX_MSIX_VECTORS; 78 /* lock to protect mailbox accesses */ 79 spin_lock_init(&wx->mbx.mbx_lock); 80 81 err = wx_reset_hw_vf(wx); 82 if (err) { 83 wx_err(wx, "PF still in reset state. Is the PF interface up?\n"); 84 goto err_reset_hw; 85 } 86 wx_init_hw_vf(wx); 87 wx_negotiate_api_vf(wx); 88 if (is_zero_ether_addr(wx->mac.addr)) 89 dev_info(&pdev->dev, 90 "MAC address not assigned by administrator.\n"); 91 eth_hw_addr_set(netdev, wx->mac.addr); 92 93 if (!is_valid_ether_addr(netdev->dev_addr)) { 94 dev_info(&pdev->dev, "Assigning random MAC address\n"); 95 eth_hw_addr_random(netdev); 96 ether_addr_copy(wx->mac.addr, netdev->dev_addr); 97 ether_addr_copy(wx->mac.perm_addr, netdev->dev_addr); 98 } 99 100 wx->mac.max_tx_queues = NGBEVF_MAX_TX_QUEUES; 101 wx->mac.max_rx_queues = NGBEVF_MAX_RX_QUEUES; 102 /* Enable dynamic interrupt throttling rates */ 103 wx->adaptive_itr = true; 104 wx->rx_itr_setting = 1; 105 wx->tx_itr_setting = 1; 106 /* set default ring sizes */ 107 wx->tx_ring_count = NGBEVF_DEFAULT_TXD; 108 wx->rx_ring_count = NGBEVF_DEFAULT_RXD; 109 /* set default work limits */ 110 wx->tx_work_limit = NGBEVF_DEFAULT_TX_WORK; 111 wx->rx_work_limit = NGBEVF_DEFAULT_RX_WORK; 112 wx->set_num_queues = ngbevf_set_num_queues; 113 114 return 0; 115 err_reset_hw: 116 kfree(wx->vfinfo); 117 err_init_mbx_params: 118 kfree(wx->rss_key); 119 kfree(wx->mac_table); 120 err_wx_sw_init: 121 return err; 122 } 123 124 /** 125 * ngbevf_probe - Device Initialization Routine 126 * @pdev: PCI device information struct 127 * @ent: entry in ngbevf_pci_tbl 128 * 129 * Return: return 0 on success, negative on failure 130 * 131 * ngbevf_probe initializes an adapter identified by a pci_dev structure. 132 * The OS initialization, configuring of the adapter private structure, 133 * and a hardware reset occur. 134 **/ 135 static int ngbevf_probe(struct pci_dev *pdev, 136 const struct pci_device_id __always_unused *ent) 137 { 138 struct net_device *netdev; 139 struct wx *wx = NULL; 140 int err; 141 142 err = pci_enable_device_mem(pdev); 143 if (err) 144 return err; 145 146 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 147 if (err) { 148 dev_err(&pdev->dev, 149 "No usable DMA configuration, aborting\n"); 150 goto err_pci_disable_dev; 151 } 152 153 err = pci_request_selected_regions(pdev, 154 pci_select_bars(pdev, IORESOURCE_MEM), 155 dev_driver_string(&pdev->dev)); 156 if (err) { 157 dev_err(&pdev->dev, 158 "pci_request_selected_regions failed 0x%x\n", err); 159 goto err_pci_disable_dev; 160 } 161 162 pci_set_master(pdev); 163 164 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 165 sizeof(struct wx), 166 NGBEVF_MAX_TX_QUEUES, 167 NGBEVF_MAX_RX_QUEUES); 168 if (!netdev) { 169 err = -ENOMEM; 170 goto err_pci_release_regions; 171 } 172 173 SET_NETDEV_DEV(netdev, &pdev->dev); 174 175 wx = netdev_priv(netdev); 176 wx->netdev = netdev; 177 wx->pdev = pdev; 178 179 wx->msg_enable = netif_msg_init(-1, NETIF_MSG_DRV | 180 NETIF_MSG_PROBE | NETIF_MSG_LINK); 181 wx->hw_addr = devm_ioremap(&pdev->dev, 182 pci_resource_start(pdev, 0), 183 pci_resource_len(pdev, 0)); 184 if (!wx->hw_addr) { 185 err = -EIO; 186 goto err_pci_release_regions; 187 } 188 189 netdev->netdev_ops = &ngbevf_netdev_ops; 190 191 /* setup the private structure */ 192 err = ngbevf_sw_init(wx); 193 if (err) 194 goto err_pci_release_regions; 195 196 netdev->features |= NETIF_F_HIGHDMA; 197 198 eth_hw_addr_set(netdev, wx->mac.perm_addr); 199 ether_addr_copy(netdev->perm_addr, wx->mac.addr); 200 201 wxvf_init_service(wx); 202 err = wx_init_interrupt_scheme(wx); 203 if (err) 204 goto err_free_sw_init; 205 206 err = register_netdev(netdev); 207 if (err) 208 goto err_register; 209 210 pci_set_drvdata(pdev, wx); 211 netif_tx_stop_all_queues(netdev); 212 213 return 0; 214 215 err_register: 216 wx_clear_interrupt_scheme(wx); 217 err_free_sw_init: 218 timer_delete_sync(&wx->service_timer); 219 cancel_work_sync(&wx->service_task); 220 kfree(wx->vfinfo); 221 kfree(wx->rss_key); 222 kfree(wx->mac_table); 223 err_pci_release_regions: 224 pci_release_selected_regions(pdev, 225 pci_select_bars(pdev, IORESOURCE_MEM)); 226 err_pci_disable_dev: 227 pci_disable_device(pdev); 228 return err; 229 } 230 231 /** 232 * ngbevf_remove - Device Removal Routine 233 * @pdev: PCI device information struct 234 * 235 * ngbevf_remove is called by the PCI subsystem to alert the driver 236 * that it should release a PCI device. The could be caused by a 237 * Hot-Plug event, or because the driver is going to be removed from 238 * memory. 239 **/ 240 static void ngbevf_remove(struct pci_dev *pdev) 241 { 242 wxvf_remove(pdev); 243 } 244 245 static DEFINE_SIMPLE_DEV_PM_OPS(ngbevf_pm_ops, wxvf_suspend, wxvf_resume); 246 247 static struct pci_driver ngbevf_driver = { 248 .name = KBUILD_MODNAME, 249 .id_table = ngbevf_pci_tbl, 250 .probe = ngbevf_probe, 251 .remove = ngbevf_remove, 252 .shutdown = wxvf_shutdown, 253 /* Power Management Hooks */ 254 .driver.pm = pm_sleep_ptr(&ngbevf_pm_ops) 255 }; 256 257 module_pci_driver(ngbevf_driver); 258 259 MODULE_DEVICE_TABLE(pci, ngbevf_pci_tbl); 260 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>"); 261 MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver"); 262 MODULE_LICENSE("GPL"); 263