git.itanic.dy.fi Git - linux-stable/blob - drivers/net/ethernet/freescale/enetc/enetc_vf.c

   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 /* Probing/ Init */
  97 static const struct net_device_ops enetc_ndev_ops = {
  98         .ndo_open               = enetc_open,
  99         .ndo_stop               = enetc_close,
 100         .ndo_start_xmit         = enetc_xmit,
 101         .ndo_get_stats          = enetc_get_stats,
 102         .ndo_set_mac_address    = enetc_vf_set_mac_addr,
 103         .ndo_set_features       = enetc_vf_set_features,
 104         .ndo_eth_ioctl          = enetc_ioctl,
 105         .ndo_setup_tc           = enetc_setup_tc,
 106 };
 107
 108 static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
 109                                   const struct net_device_ops *ndev_ops)
 110 {
 111         struct enetc_ndev_priv *priv = netdev_priv(ndev);
 112
 113         SET_NETDEV_DEV(ndev, &si->pdev->dev);
 114         priv->ndev = ndev;
 115         priv->si = si;
 116         priv->dev = &si->pdev->dev;
 117         si->ndev = ndev;
 118
 119         priv->msg_enable = (NETIF_MSG_IFUP << 1) - 1;
 120         ndev->netdev_ops = ndev_ops;
 121         enetc_set_ethtool_ops(ndev);
 122         ndev->watchdog_timeo = 5 * HZ;
 123         ndev->max_mtu = ENETC_MAX_MTU;
 124
 125         ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
 126                             NETIF_F_HW_VLAN_CTAG_TX |
 127                             NETIF_F_HW_VLAN_CTAG_RX |
 128                             NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
 129         ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
 130                          NETIF_F_HW_VLAN_CTAG_TX |
 131                          NETIF_F_HW_VLAN_CTAG_RX |
 132                          NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
 133         ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
 134                               NETIF_F_TSO | NETIF_F_TSO6;
 135
 136         if (si->num_rss)
 137                 ndev->hw_features |= NETIF_F_RXHASH;
 138
 139         /* pick up primary MAC address from SI */
 140         enetc_load_primary_mac_addr(&si->hw, ndev);
 141 }
 142
 143 static int enetc_vf_probe(struct pci_dev *pdev,
 144                           const struct pci_device_id *ent)
 145 {
 146         struct enetc_ndev_priv *priv;
 147         struct net_device *ndev;
 148         struct enetc_si *si;
 149         int err;
 150
 151         err = enetc_pci_probe(pdev, KBUILD_MODNAME, 0);
 152         if (err)
 153                 return dev_err_probe(&pdev->dev, err, "PCI probing failed\n");
 154
 155         si = pci_get_drvdata(pdev);
 156
 157         enetc_get_si_caps(si);
 158
 159         ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS);
 160         if (!ndev) {
 161                 err = -ENOMEM;
 162                 dev_err(&pdev->dev, "netdev creation failed\n");
 163                 goto err_alloc_netdev;
 164         }
 165
 166         enetc_vf_netdev_setup(si, ndev, &enetc_ndev_ops);
 167
 168         priv = netdev_priv(ndev);
 169
 170         enetc_init_si_rings_params(priv);
 171
 172         err = enetc_setup_cbdr(priv->dev, &si->hw, ENETC_CBDR_DEFAULT_SIZE,
 173                                &si->cbd_ring);
 174         if (err)
 175                 goto err_setup_cbdr;
 176
 177         err = enetc_alloc_si_resources(priv);
 178         if (err) {
 179                 dev_err(&pdev->dev, "SI resource alloc failed\n");
 180                 goto err_alloc_si_res;
 181         }
 182
 183         err = enetc_configure_si(priv);
 184         if (err) {
 185                 dev_err(&pdev->dev, "Failed to configure SI\n");
 186                 goto err_config_si;
 187         }
 188
 189         err = enetc_alloc_msix(priv);
 190         if (err) {
 191                 dev_err(&pdev->dev, "MSIX alloc failed\n");
 192                 goto err_alloc_msix;
 193         }
 194
 195         err = register_netdev(ndev);
 196         if (err)
 197                 goto err_reg_netdev;
 198
 199         netif_carrier_off(ndev);
 200
 201         return 0;
 202
 203 err_reg_netdev:
 204         enetc_free_msix(priv);
 205 err_config_si:
 206 err_alloc_msix:
 207         enetc_free_si_resources(priv);
 208 err_alloc_si_res:
 209         enetc_teardown_cbdr(&si->cbd_ring);
 210 err_setup_cbdr:
 211         si->ndev = NULL;
 212         free_netdev(ndev);
 213 err_alloc_netdev:
 214         enetc_pci_remove(pdev);
 215
 216         return err;
 217 }
 218
 219 static void enetc_vf_remove(struct pci_dev *pdev)
 220 {
 221         struct enetc_si *si = pci_get_drvdata(pdev);
 222         struct enetc_ndev_priv *priv;
 223
 224         priv = netdev_priv(si->ndev);
 225         unregister_netdev(si->ndev);
 226
 227         enetc_free_msix(priv);
 228
 229         enetc_free_si_resources(priv);
 230         enetc_teardown_cbdr(&si->cbd_ring);
 231
 232         free_netdev(si->ndev);
 233
 234         enetc_pci_remove(pdev);
 235 }
 236
 237 static const struct pci_device_id enetc_vf_id_table[] = {
 238         { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_VF) },
 239         { 0, } /* End of table. */
 240 };
 241 MODULE_DEVICE_TABLE(pci, enetc_vf_id_table);
 242
 243 static struct pci_driver enetc_vf_driver = {
 244         .name = KBUILD_MODNAME,
 245         .id_table = enetc_vf_id_table,
 246         .probe = enetc_vf_probe,
 247         .remove = enetc_vf_remove,
 248 };
 249 module_pci_driver(enetc_vf_driver);
 250
 251 MODULE_DESCRIPTION(ENETC_DRV_NAME_STR);
 252 MODULE_LICENSE("Dual BSD/GPL");