1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 2 /* Copyright 2017-2019 NXP */ 3 4 #include <linux/module.h> 5 #include "enetc.h" 6 7 #define ENETC_DRV_NAME_STR "ENETC VF driver" 8 9 /* Messaging */ 10 static void enetc_msg_vsi_write_msg(struct enetc_hw *hw, 11 struct enetc_msg_swbd *msg) 12 { 13 u32 val; 14 15 val = enetc_vsi_set_msize(msg->size) | lower_32_bits(msg->dma); 16 enetc_wr(hw, ENETC_VSIMSGSNDAR1, upper_32_bits(msg->dma)); 17 enetc_wr(hw, ENETC_VSIMSGSNDAR0, val); 18 } 19 20 static int enetc_msg_vsi_send(struct enetc_si *si, struct enetc_msg_swbd *msg) 21 { 22 int timeout = 100; 23 u32 vsimsgsr; 24 25 enetc_msg_vsi_write_msg(&si->hw, msg); 26 27 do { 28 vsimsgsr = enetc_rd(&si->hw, ENETC_VSIMSGSR); 29 if (!(vsimsgsr & ENETC_VSIMSGSR_MB)) 30 break; 31 32 usleep_range(1000, 2000); 33 } while (--timeout); 34 35 if (!timeout) 36 return -ETIMEDOUT; 37 38 /* check for message delivery error */ 39 if (vsimsgsr & ENETC_VSIMSGSR_MS) { 40 dev_err(&si->pdev->dev, "VSI command execute error: %d\n", 41 ENETC_SIMSGSR_GET_MC(vsimsgsr)); 42 return -EIO; 43 } 44 45 return 0; 46 } 47 48 static int enetc_msg_vsi_set_primary_mac_addr(struct enetc_ndev_priv *priv, 49 struct sockaddr *saddr) 50 { 51 struct enetc_msg_cmd_set_primary_mac *cmd; 52 struct enetc_msg_swbd msg; 53 int err; 54 55 msg.size = ALIGN(sizeof(struct enetc_msg_cmd_set_primary_mac), 64); 56 msg.vaddr = dma_alloc_coherent(priv->dev, msg.size, &msg.dma, 57 GFP_KERNEL); 58 if (!msg.vaddr) { 59 dev_err(priv->dev, "Failed to alloc Tx msg (size: %d)\n", 60 msg.size); 61 return -ENOMEM; 62 } 63 64 cmd = (struct enetc_msg_cmd_set_primary_mac *)msg.vaddr; 65 cmd->header.type = ENETC_MSG_CMD_MNG_MAC; 66 cmd->header.id = ENETC_MSG_CMD_MNG_ADD; 67 memcpy(&cmd->mac, saddr, sizeof(struct sockaddr)); 68 69 /* send the command and wait */ 70 err = enetc_msg_vsi_send(priv->si, &msg); 71 72 dma_free_coherent(priv->dev, msg.size, msg.vaddr, msg.dma); 73 74 return err; 75 } 76 77 static int enetc_vf_set_mac_addr(struct net_device *ndev, void *addr) 78 { 79 struct enetc_ndev_priv *priv = netdev_priv(ndev); 80 struct sockaddr *saddr = addr; 81 82 if (!is_valid_ether_addr(saddr->sa_data)) 83 return -EADDRNOTAVAIL; 84 85 return enetc_msg_vsi_set_primary_mac_addr(priv, saddr); 86 } 87 88 static int enetc_vf_set_features(struct net_device *ndev, 89 netdev_features_t features) 90 { 91 enetc_set_features(ndev, features); 92 93 return 0; 94 } 95 96 static int enetc_vf_setup_tc(struct net_device *ndev, enum tc_setup_type type, 97 void *type_data) 98 { 99 switch (type) { 100 case TC_SETUP_QDISC_MQPRIO: 101 return enetc_setup_tc_mqprio(ndev, type_data); 102 default: 103 return -EOPNOTSUPP; 104 } 105 } 106 107 /* Probing/ Init */ 108 static const struct net_device_ops enetc_ndev_ops = { 109 .ndo_open = enetc_open, 110 .ndo_stop = enetc_close, 111 .ndo_start_xmit = enetc_xmit, 112 .ndo_get_stats = enetc_get_stats, 113 .ndo_set_mac_address = enetc_vf_set_mac_addr, 114 .ndo_set_features = enetc_vf_set_features, 115 .ndo_eth_ioctl = enetc_ioctl, 116 .ndo_setup_tc = enetc_vf_setup_tc, 117 }; 118 119 static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev, 120 const struct net_device_ops *ndev_ops) 121 { 122 struct enetc_ndev_priv *priv = netdev_priv(ndev); 123 124 SET_NETDEV_DEV(ndev, &si->pdev->dev); 125 priv->ndev = ndev; 126 priv->si = si; 127 priv->dev = &si->pdev->dev; 128 si->ndev = ndev; 129 130 priv->msg_enable = (NETIF_MSG_IFUP << 1) - 1; 131 ndev->netdev_ops = ndev_ops; 132 enetc_set_ethtool_ops(ndev); 133 ndev->watchdog_timeo = 5 * HZ; 134 ndev->max_mtu = ENETC_MAX_MTU; 135 136 ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | 137 NETIF_F_HW_VLAN_CTAG_TX | 138 NETIF_F_HW_VLAN_CTAG_RX | 139 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; 140 ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM | 141 NETIF_F_HW_VLAN_CTAG_TX | 142 NETIF_F_HW_VLAN_CTAG_RX | 143 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; 144 ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM | 145 NETIF_F_TSO | NETIF_F_TSO6; 146 147 if (si->num_rss) 148 ndev->hw_features |= NETIF_F_RXHASH; 149 150 /* pick up primary MAC address from SI */ 151 enetc_load_primary_mac_addr(&si->hw, ndev); 152 } 153 154 static int enetc_vf_probe(struct pci_dev *pdev, 155 const struct pci_device_id *ent) 156 { 157 struct enetc_ndev_priv *priv; 158 struct net_device *ndev; 159 struct enetc_si *si; 160 int err; 161 162 err = enetc_pci_probe(pdev, KBUILD_MODNAME, 0); 163 if (err) 164 return dev_err_probe(&pdev->dev, err, "PCI probing failed\n"); 165 166 si = pci_get_drvdata(pdev); 167 168 enetc_get_si_caps(si); 169 170 ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); 171 if (!ndev) { 172 err = -ENOMEM; 173 dev_err(&pdev->dev, "netdev creation failed\n"); 174 goto err_alloc_netdev; 175 } 176 177 enetc_vf_netdev_setup(si, ndev, &enetc_ndev_ops); 178 179 priv = netdev_priv(ndev); 180 181 enetc_init_si_rings_params(priv); 182 183 err = enetc_setup_cbdr(priv->dev, &si->hw, ENETC_CBDR_DEFAULT_SIZE, 184 &si->cbd_ring); 185 if (err) 186 goto err_setup_cbdr; 187 188 err = enetc_alloc_si_resources(priv); 189 if (err) { 190 dev_err(&pdev->dev, "SI resource alloc failed\n"); 191 goto err_alloc_si_res; 192 } 193 194 err = enetc_configure_si(priv); 195 if (err) { 196 dev_err(&pdev->dev, "Failed to configure SI\n"); 197 goto err_config_si; 198 } 199 200 err = enetc_alloc_msix(priv); 201 if (err) { 202 dev_err(&pdev->dev, "MSIX alloc failed\n"); 203 goto err_alloc_msix; 204 } 205 206 err = register_netdev(ndev); 207 if (err) 208 goto err_reg_netdev; 209 210 netif_carrier_off(ndev); 211 212 return 0; 213 214 err_reg_netdev: 215 enetc_free_msix(priv); 216 err_config_si: 217 err_alloc_msix: 218 enetc_free_si_resources(priv); 219 err_alloc_si_res: 220 enetc_teardown_cbdr(&si->cbd_ring); 221 err_setup_cbdr: 222 si->ndev = NULL; 223 free_netdev(ndev); 224 err_alloc_netdev: 225 enetc_pci_remove(pdev); 226 227 return err; 228 } 229 230 static void enetc_vf_remove(struct pci_dev *pdev) 231 { 232 struct enetc_si *si = pci_get_drvdata(pdev); 233 struct enetc_ndev_priv *priv; 234 235 priv = netdev_priv(si->ndev); 236 unregister_netdev(si->ndev); 237 238 enetc_free_msix(priv); 239 240 enetc_free_si_resources(priv); 241 enetc_teardown_cbdr(&si->cbd_ring); 242 243 free_netdev(si->ndev); 244 245 enetc_pci_remove(pdev); 246 } 247 248 static const struct pci_device_id enetc_vf_id_table[] = { 249 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_VF) }, 250 { 0, } /* End of table. */ 251 }; 252 MODULE_DEVICE_TABLE(pci, enetc_vf_id_table); 253 254 static struct pci_driver enetc_vf_driver = { 255 .name = KBUILD_MODNAME, 256 .id_table = enetc_vf_id_table, 257 .probe = enetc_vf_probe, 258 .remove = enetc_vf_remove, 259 }; 260 module_pci_driver(enetc_vf_driver); 261 262 MODULE_DESCRIPTION(ENETC_DRV_NAME_STR); 263 MODULE_LICENSE("Dual BSD/GPL"); 264