| // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) |
| /* Copyright 2017-2019 NXP */ |
| |
| #include <linux/module.h> |
| #include "enetc.h" |
| |
| #define ENETC_DRV_NAME_STR "ENETC VF driver" |
| |
| /* Messaging */ |
| static void enetc_msg_vsi_write_msg(struct enetc_hw *hw, |
| struct enetc_msg_swbd *msg) |
| { |
| u32 val; |
| |
| val = enetc_vsi_set_msize(msg->size) | lower_32_bits(msg->dma); |
| enetc_wr(hw, ENETC_VSIMSGSNDAR1, upper_32_bits(msg->dma)); |
| enetc_wr(hw, ENETC_VSIMSGSNDAR0, val); |
| } |
| |
| static int enetc_msg_vsi_send(struct enetc_si *si, struct enetc_msg_swbd *msg) |
| { |
| int timeout = 100; |
| u32 vsimsgsr; |
| |
| enetc_msg_vsi_write_msg(&si->hw, msg); |
| |
| do { |
| vsimsgsr = enetc_rd(&si->hw, ENETC_VSIMSGSR); |
| if (!(vsimsgsr & ENETC_VSIMSGSR_MB)) |
| break; |
| |
| usleep_range(1000, 2000); |
| } while (--timeout); |
| |
| if (!timeout) |
| return -ETIMEDOUT; |
| |
| /* check for message delivery error */ |
| if (vsimsgsr & ENETC_VSIMSGSR_MS) { |
| dev_err(&si->pdev->dev, "VSI command execute error: %d\n", |
| ENETC_SIMSGSR_GET_MC(vsimsgsr)); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int enetc_msg_vsi_set_primary_mac_addr(struct enetc_ndev_priv *priv, |
| struct sockaddr *saddr) |
| { |
| struct enetc_msg_cmd_set_primary_mac *cmd; |
| struct enetc_msg_swbd msg; |
| int err; |
| |
| msg.size = ALIGN(sizeof(struct enetc_msg_cmd_set_primary_mac), 64); |
| msg.vaddr = dma_alloc_coherent(priv->dev, msg.size, &msg.dma, |
| GFP_KERNEL); |
| if (!msg.vaddr) { |
| dev_err(priv->dev, "Failed to alloc Tx msg (size: %d)\n", |
| msg.size); |
| return -ENOMEM; |
| } |
| |
| cmd = (struct enetc_msg_cmd_set_primary_mac *)msg.vaddr; |
| cmd->header.type = ENETC_MSG_CMD_MNG_MAC; |
| cmd->header.id = ENETC_MSG_CMD_MNG_ADD; |
| memcpy(&cmd->mac, saddr, sizeof(struct sockaddr)); |
| |
| /* send the command and wait */ |
| err = enetc_msg_vsi_send(priv->si, &msg); |
| |
| dma_free_coherent(priv->dev, msg.size, msg.vaddr, msg.dma); |
| |
| return err; |
| } |
| |
| static int enetc_vf_set_mac_addr(struct net_device *ndev, void *addr) |
| { |
| struct enetc_ndev_priv *priv = netdev_priv(ndev); |
| struct sockaddr *saddr = addr; |
| int err; |
| |
| if (!is_valid_ether_addr(saddr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| err = enetc_msg_vsi_set_primary_mac_addr(priv, saddr); |
| if (err) |
| return err; |
| |
| eth_hw_addr_set(ndev, saddr->sa_data); |
| |
| return 0; |
| } |
| |
| static int enetc_vf_set_features(struct net_device *ndev, |
| netdev_features_t features) |
| { |
| enetc_set_features(ndev, features); |
| |
| return 0; |
| } |
| |
| static int enetc_vf_setup_tc(struct net_device *ndev, enum tc_setup_type type, |
| void *type_data) |
| { |
| switch (type) { |
| case TC_SETUP_QDISC_MQPRIO: |
| return enetc_setup_tc_mqprio(ndev, type_data); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| /* Probing/ Init */ |
| static const struct net_device_ops enetc_ndev_ops = { |
| .ndo_open = enetc_open, |
| .ndo_stop = enetc_close, |
| .ndo_start_xmit = enetc_xmit, |
| .ndo_get_stats = enetc_get_stats, |
| .ndo_set_mac_address = enetc_vf_set_mac_addr, |
| .ndo_set_features = enetc_vf_set_features, |
| .ndo_eth_ioctl = enetc_ioctl, |
| .ndo_setup_tc = enetc_vf_setup_tc, |
| }; |
| |
| static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev, |
| const struct net_device_ops *ndev_ops) |
| { |
| struct enetc_ndev_priv *priv = netdev_priv(ndev); |
| |
| SET_NETDEV_DEV(ndev, &si->pdev->dev); |
| priv->ndev = ndev; |
| priv->si = si; |
| priv->dev = &si->pdev->dev; |
| si->ndev = ndev; |
| |
| priv->msg_enable = (NETIF_MSG_IFUP << 1) - 1; |
| ndev->netdev_ops = ndev_ops; |
| enetc_set_ethtool_ops(ndev); |
| ndev->watchdog_timeo = 5 * HZ; |
| ndev->max_mtu = ENETC_MAX_MTU; |
| |
| ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
| NETIF_F_HW_VLAN_CTAG_TX | |
| NETIF_F_HW_VLAN_CTAG_RX | |
| NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; |
| ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM | |
| NETIF_F_HW_VLAN_CTAG_TX | |
| NETIF_F_HW_VLAN_CTAG_RX | |
| NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; |
| ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM | |
| NETIF_F_TSO | NETIF_F_TSO6; |
| |
| if (si->num_rss) |
| ndev->hw_features |= NETIF_F_RXHASH; |
| |
| /* pick up primary MAC address from SI */ |
| enetc_load_primary_mac_addr(&si->hw, ndev); |
| } |
| |
| static int enetc_vf_probe(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| struct enetc_ndev_priv *priv; |
| struct net_device *ndev; |
| struct enetc_si *si; |
| int err; |
| |
| err = enetc_pci_probe(pdev, KBUILD_MODNAME, 0); |
| if (err) |
| return dev_err_probe(&pdev->dev, err, "PCI probing failed\n"); |
| |
| si = pci_get_drvdata(pdev); |
| |
| enetc_get_si_caps(si); |
| |
| ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); |
| if (!ndev) { |
| err = -ENOMEM; |
| dev_err(&pdev->dev, "netdev creation failed\n"); |
| goto err_alloc_netdev; |
| } |
| |
| enetc_vf_netdev_setup(si, ndev, &enetc_ndev_ops); |
| |
| priv = netdev_priv(ndev); |
| |
| enetc_init_si_rings_params(priv); |
| |
| err = enetc_setup_cbdr(priv->dev, &si->hw, ENETC_CBDR_DEFAULT_SIZE, |
| &si->cbd_ring); |
| if (err) |
| goto err_setup_cbdr; |
| |
| err = enetc_alloc_si_resources(priv); |
| if (err) { |
| dev_err(&pdev->dev, "SI resource alloc failed\n"); |
| goto err_alloc_si_res; |
| } |
| |
| err = enetc_configure_si(priv); |
| if (err) { |
| dev_err(&pdev->dev, "Failed to configure SI\n"); |
| goto err_config_si; |
| } |
| |
| err = enetc_alloc_msix(priv); |
| if (err) { |
| dev_err(&pdev->dev, "MSIX alloc failed\n"); |
| goto err_alloc_msix; |
| } |
| |
| err = register_netdev(ndev); |
| if (err) |
| goto err_reg_netdev; |
| |
| netif_carrier_off(ndev); |
| |
| return 0; |
| |
| err_reg_netdev: |
| enetc_free_msix(priv); |
| err_config_si: |
| err_alloc_msix: |
| enetc_free_si_resources(priv); |
| err_alloc_si_res: |
| enetc_teardown_cbdr(&si->cbd_ring); |
| err_setup_cbdr: |
| si->ndev = NULL; |
| free_netdev(ndev); |
| err_alloc_netdev: |
| enetc_pci_remove(pdev); |
| |
| return err; |
| } |
| |
| static void enetc_vf_remove(struct pci_dev *pdev) |
| { |
| struct enetc_si *si = pci_get_drvdata(pdev); |
| struct enetc_ndev_priv *priv; |
| |
| priv = netdev_priv(si->ndev); |
| unregister_netdev(si->ndev); |
| |
| enetc_free_msix(priv); |
| |
| enetc_free_si_resources(priv); |
| enetc_teardown_cbdr(&si->cbd_ring); |
| |
| free_netdev(si->ndev); |
| |
| enetc_pci_remove(pdev); |
| } |
| |
| static const struct pci_device_id enetc_vf_id_table[] = { |
| { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_VF) }, |
| { 0, } /* End of table. */ |
| }; |
| MODULE_DEVICE_TABLE(pci, enetc_vf_id_table); |
| |
| static struct pci_driver enetc_vf_driver = { |
| .name = KBUILD_MODNAME, |
| .id_table = enetc_vf_id_table, |
| .probe = enetc_vf_probe, |
| .remove = enetc_vf_remove, |
| }; |
| module_pci_driver(enetc_vf_driver); |
| |
| MODULE_DESCRIPTION(ENETC_DRV_NAME_STR); |
| MODULE_LICENSE("Dual BSD/GPL"); |