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->rx_itr_setting = 1; 104 wx->tx_itr_setting = 1; 105 /* set default ring sizes */ 106 wx->tx_ring_count = NGBEVF_DEFAULT_TXD; 107 wx->rx_ring_count = NGBEVF_DEFAULT_RXD; 108 /* set default work limits */ 109 wx->tx_work_limit = NGBEVF_DEFAULT_TX_WORK; 110 wx->rx_work_limit = NGBEVF_DEFAULT_RX_WORK; 111 wx->set_num_queues = ngbevf_set_num_queues; 112 113 return 0; 114 err_reset_hw: 115 kfree(wx->vfinfo); 116 err_init_mbx_params: 117 kfree(wx->rss_key); 118 kfree(wx->mac_table); 119 err_wx_sw_init: 120 return err; 121 } 122 123 /** 124 * ngbevf_probe - Device Initialization Routine 125 * @pdev: PCI device information struct 126 * @ent: entry in ngbevf_pci_tbl 127 * 128 * Return: return 0 on success, negative on failure 129 * 130 * ngbevf_probe initializes an adapter identified by a pci_dev structure. 131 * The OS initialization, configuring of the adapter private structure, 132 * and a hardware reset occur. 133 **/ 134 static int ngbevf_probe(struct pci_dev *pdev, 135 const struct pci_device_id __always_unused *ent) 136 { 137 struct net_device *netdev; 138 struct wx *wx = NULL; 139 int err; 140 141 err = pci_enable_device_mem(pdev); 142 if (err) 143 return err; 144 145 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 146 if (err) { 147 dev_err(&pdev->dev, 148 "No usable DMA configuration, aborting\n"); 149 goto err_pci_disable_dev; 150 } 151 152 err = pci_request_selected_regions(pdev, 153 pci_select_bars(pdev, IORESOURCE_MEM), 154 dev_driver_string(&pdev->dev)); 155 if (err) { 156 dev_err(&pdev->dev, 157 "pci_request_selected_regions failed 0x%x\n", err); 158 goto err_pci_disable_dev; 159 } 160 161 pci_set_master(pdev); 162 163 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 164 sizeof(struct wx), 165 NGBEVF_MAX_TX_QUEUES, 166 NGBEVF_MAX_RX_QUEUES); 167 if (!netdev) { 168 err = -ENOMEM; 169 goto err_pci_release_regions; 170 } 171 172 SET_NETDEV_DEV(netdev, &pdev->dev); 173 174 wx = netdev_priv(netdev); 175 wx->netdev = netdev; 176 wx->pdev = pdev; 177 178 wx->msg_enable = netif_msg_init(-1, NETIF_MSG_DRV | 179 NETIF_MSG_PROBE | NETIF_MSG_LINK); 180 wx->hw_addr = devm_ioremap(&pdev->dev, 181 pci_resource_start(pdev, 0), 182 pci_resource_len(pdev, 0)); 183 if (!wx->hw_addr) { 184 err = -EIO; 185 goto err_pci_release_regions; 186 } 187 188 netdev->netdev_ops = &ngbevf_netdev_ops; 189 190 /* setup the private structure */ 191 err = ngbevf_sw_init(wx); 192 if (err) 193 goto err_pci_release_regions; 194 195 netdev->features |= NETIF_F_HIGHDMA; 196 197 eth_hw_addr_set(netdev, wx->mac.perm_addr); 198 ether_addr_copy(netdev->perm_addr, wx->mac.addr); 199 200 wxvf_init_service(wx); 201 err = wx_init_interrupt_scheme(wx); 202 if (err) 203 goto err_free_sw_init; 204 205 err = register_netdev(netdev); 206 if (err) 207 goto err_register; 208 209 pci_set_drvdata(pdev, wx); 210 netif_tx_stop_all_queues(netdev); 211 212 return 0; 213 214 err_register: 215 wx_clear_interrupt_scheme(wx); 216 err_free_sw_init: 217 timer_delete_sync(&wx->service_timer); 218 cancel_work_sync(&wx->service_task); 219 kfree(wx->vfinfo); 220 kfree(wx->rss_key); 221 kfree(wx->mac_table); 222 err_pci_release_regions: 223 pci_release_selected_regions(pdev, 224 pci_select_bars(pdev, IORESOURCE_MEM)); 225 err_pci_disable_dev: 226 pci_disable_device(pdev); 227 return err; 228 } 229 230 /** 231 * ngbevf_remove - Device Removal Routine 232 * @pdev: PCI device information struct 233 * 234 * ngbevf_remove is called by the PCI subsystem to alert the driver 235 * that it should release a PCI device. The could be caused by a 236 * Hot-Plug event, or because the driver is going to be removed from 237 * memory. 238 **/ 239 static void ngbevf_remove(struct pci_dev *pdev) 240 { 241 wxvf_remove(pdev); 242 } 243 244 static DEFINE_SIMPLE_DEV_PM_OPS(ngbevf_pm_ops, wxvf_suspend, wxvf_resume); 245 246 static struct pci_driver ngbevf_driver = { 247 .name = KBUILD_MODNAME, 248 .id_table = ngbevf_pci_tbl, 249 .probe = ngbevf_probe, 250 .remove = ngbevf_remove, 251 .shutdown = wxvf_shutdown, 252 /* Power Management Hooks */ 253 .driver.pm = pm_sleep_ptr(&ngbevf_pm_ops) 254 }; 255 256 module_pci_driver(ngbevf_driver); 257 258 MODULE_DEVICE_TABLE(pci, ngbevf_pci_tbl); 259 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>"); 260 MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver"); 261 MODULE_LICENSE("GPL"); 262