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 int err; 82 83 if (!is_valid_ether_addr(saddr->sa_data)) 84 return -EADDRNOTAVAIL; 85 86 err = enetc_msg_vsi_set_primary_mac_addr(priv, saddr); 87 if (err) 88 return err; 89 90 eth_hw_addr_set(ndev, saddr->sa_data); 91 92 return 0; 93 } 94 95 static int enetc_vf_set_features(struct net_device *ndev, 96 netdev_features_t features) 97 { 98 enetc_set_features(ndev, features); 99 100 return 0; 101 } 102 103 static int enetc_vf_setup_tc(struct net_device *ndev, enum tc_setup_type type, 104 void *type_data) 105 { 106 switch (type) { 107 case TC_SETUP_QDISC_MQPRIO: 108 return enetc_setup_tc_mqprio(ndev, type_data); 109 default: 110 return -EOPNOTSUPP; 111 } 112 } 113 114 /* Probing/ Init */ 115 static const struct net_device_ops enetc_ndev_ops = { 116 .ndo_open = enetc_open, 117 .ndo_stop = enetc_close, 118 .ndo_start_xmit = enetc_xmit, 119 .ndo_get_stats = enetc_get_stats, 120 .ndo_set_mac_address = enetc_vf_set_mac_addr, 121 .ndo_set_features = enetc_vf_set_features, 122 .ndo_eth_ioctl = enetc_ioctl, 123 .ndo_setup_tc = enetc_vf_setup_tc, 124 }; 125 126 static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev, 127 const struct net_device_ops *ndev_ops) 128 { 129 struct enetc_ndev_priv *priv = netdev_priv(ndev); 130 131 SET_NETDEV_DEV(ndev, &si->pdev->dev); 132 priv->ndev = ndev; 133 priv->si = si; 134 priv->dev = &si->pdev->dev; 135 si->ndev = ndev; 136 137 priv->msg_enable = (NETIF_MSG_IFUP << 1) - 1; 138 priv->sysclk_freq = si->drvdata->sysclk_freq; 139 priv->max_frags = si->drvdata->max_frags; 140 ndev->netdev_ops = ndev_ops; 141 enetc_set_ethtool_ops(ndev); 142 ndev->watchdog_timeo = 5 * HZ; 143 ndev->max_mtu = ENETC_MAX_MTU; 144 145 ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | 146 NETIF_F_HW_VLAN_CTAG_TX | 147 NETIF_F_HW_VLAN_CTAG_RX | 148 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | 149 NETIF_F_GSO_UDP_L4; 150 ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM | 151 NETIF_F_HW_VLAN_CTAG_TX | 152 NETIF_F_HW_VLAN_CTAG_RX | 153 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | 154 NETIF_F_GSO_UDP_L4; 155 ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM | 156 NETIF_F_TSO | NETIF_F_TSO6; 157 158 if (si->num_rss) 159 ndev->hw_features |= NETIF_F_RXHASH; 160 161 /* pick up primary MAC address from SI */ 162 enetc_load_primary_mac_addr(&si->hw, ndev); 163 } 164 165 static int enetc_vf_probe(struct pci_dev *pdev, 166 const struct pci_device_id *ent) 167 { 168 struct enetc_ndev_priv *priv; 169 struct net_device *ndev; 170 struct enetc_si *si; 171 int err; 172 173 err = enetc_pci_probe(pdev, KBUILD_MODNAME, 0); 174 if (err) 175 return dev_err_probe(&pdev->dev, err, "PCI probing failed\n"); 176 177 si = pci_get_drvdata(pdev); 178 si->revision = ENETC_REV_1_0; 179 err = enetc_get_driver_data(si); 180 if (err) { 181 dev_err_probe(&pdev->dev, err, 182 "Could not get VF driver data\n"); 183 goto err_alloc_netdev; 184 } 185 186 enetc_get_si_caps(si); 187 188 ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); 189 if (!ndev) { 190 err = -ENOMEM; 191 dev_err(&pdev->dev, "netdev creation failed\n"); 192 goto err_alloc_netdev; 193 } 194 195 enetc_vf_netdev_setup(si, ndev, &enetc_ndev_ops); 196 197 priv = netdev_priv(ndev); 198 199 enetc_init_si_rings_params(priv); 200 201 err = enetc_setup_cbdr(priv->dev, &si->hw, ENETC_CBDR_DEFAULT_SIZE, 202 &si->cbd_ring); 203 if (err) 204 goto err_setup_cbdr; 205 206 err = enetc_alloc_si_resources(priv); 207 if (err) { 208 dev_err(&pdev->dev, "SI resource alloc failed\n"); 209 goto err_alloc_si_res; 210 } 211 212 err = enetc_configure_si(priv); 213 if (err) { 214 dev_err(&pdev->dev, "Failed to configure SI\n"); 215 goto err_config_si; 216 } 217 218 err = enetc_alloc_msix(priv); 219 if (err) { 220 dev_err(&pdev->dev, "MSIX alloc failed\n"); 221 goto err_alloc_msix; 222 } 223 224 err = register_netdev(ndev); 225 if (err) 226 goto err_reg_netdev; 227 228 netif_carrier_off(ndev); 229 230 return 0; 231 232 err_reg_netdev: 233 enetc_free_msix(priv); 234 err_config_si: 235 err_alloc_msix: 236 enetc_free_si_resources(priv); 237 err_alloc_si_res: 238 enetc_teardown_cbdr(&si->cbd_ring); 239 err_setup_cbdr: 240 si->ndev = NULL; 241 free_netdev(ndev); 242 err_alloc_netdev: 243 enetc_pci_remove(pdev); 244 245 return err; 246 } 247 248 static void enetc_vf_remove(struct pci_dev *pdev) 249 { 250 struct enetc_si *si = pci_get_drvdata(pdev); 251 struct enetc_ndev_priv *priv; 252 253 priv = netdev_priv(si->ndev); 254 unregister_netdev(si->ndev); 255 256 enetc_free_msix(priv); 257 258 enetc_free_si_resources(priv); 259 enetc_teardown_cbdr(&si->cbd_ring); 260 261 free_netdev(si->ndev); 262 263 enetc_pci_remove(pdev); 264 } 265 266 static const struct pci_device_id enetc_vf_id_table[] = { 267 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_VF) }, 268 { 0, } /* End of table. */ 269 }; 270 MODULE_DEVICE_TABLE(pci, enetc_vf_id_table); 271 272 static struct pci_driver enetc_vf_driver = { 273 .name = KBUILD_MODNAME, 274 .id_table = enetc_vf_id_table, 275 .probe = enetc_vf_probe, 276 .remove = enetc_vf_remove, 277 }; 278 module_pci_driver(enetc_vf_driver); 279 280 MODULE_DESCRIPTION(ENETC_DRV_NAME_STR); 281 MODULE_LICENSE("Dual BSD/GPL"); 282