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// 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;
if (!is_valid_ether_addr(saddr->sa_data))
return -EADDRNOTAVAIL;
return enetc_msg_vsi_set_primary_mac_addr(priv, saddr);
}
static int enetc_vf_set_features(struct net_device *ndev,
netdev_features_t features)
{
return enetc_set_features(ndev, features);
}
/* 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_do_ioctl = enetc_ioctl,
.ndo_setup_tc = enetc_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_CSUM |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;
ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG |
NETIF_F_RXCSUM | NETIF_F_HW_CSUM |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;
if (si->num_rss)
ndev->hw_features |= NETIF_F_RXHASH;
if (si->errata & ENETC_ERR_TXCSUM) {
ndev->hw_features &= ~NETIF_F_HW_CSUM;
ndev->features &= ~NETIF_F_HW_CSUM;
}
/* pick up primary MAC address from SI */
enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr);
}
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) {
dev_err(&pdev->dev, "PCI probing failed\n");
return err;
}
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_alloc_si_resources(priv);
if (err) {
dev_err(&pdev->dev, "SI resource alloc failed\n");
goto err_alloc_si_res;
}
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_alloc_msix:
enetc_free_si_resources(priv);
err_alloc_si_res:
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);
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");
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