mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![Jeff Kirsher](/assets/img/avatar_default.png)
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Oliver Neukum <oliver@neukum.org> CC: Steve Glendinning <steve.glendinning@shawell.net> CC: Oliver Neukum <oneukum@suse.de> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
422 lines
10 KiB
C
422 lines
10 KiB
C
/*
|
|
* ASIX AX88172A based USB 2.0 Ethernet Devices
|
|
* Copyright (C) 2012 OMICRON electronics GmbH
|
|
*
|
|
* Supports external PHYs via phylib. Based on the driver for the
|
|
* AX88772. Original copyrights follow:
|
|
*
|
|
* Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
|
|
* Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
|
|
* Copyright (C) 2006 James Painter <jamie.painter@iname.com>
|
|
* Copyright (c) 2002-2003 TiVo Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "asix.h"
|
|
#include <linux/phy.h>
|
|
|
|
struct ax88172a_private {
|
|
struct mii_bus *mdio;
|
|
struct phy_device *phydev;
|
|
char phy_name[20];
|
|
u16 phy_addr;
|
|
u16 oldmode;
|
|
int use_embdphy;
|
|
struct asix_rx_fixup_info rx_fixup_info;
|
|
};
|
|
|
|
/* MDIO read and write wrappers for phylib */
|
|
static int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum)
|
|
{
|
|
return asix_mdio_read(((struct usbnet *)bus->priv)->net, phy_id,
|
|
regnum);
|
|
}
|
|
|
|
static int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum,
|
|
u16 val)
|
|
{
|
|
asix_mdio_write(((struct usbnet *)bus->priv)->net, phy_id, regnum, val);
|
|
return 0;
|
|
}
|
|
|
|
static int ax88172a_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
|
|
{
|
|
if (!netif_running(net))
|
|
return -EINVAL;
|
|
|
|
if (!net->phydev)
|
|
return -ENODEV;
|
|
|
|
return phy_mii_ioctl(net->phydev, rq, cmd);
|
|
}
|
|
|
|
/* set MAC link settings according to information from phylib */
|
|
static void ax88172a_adjust_link(struct net_device *netdev)
|
|
{
|
|
struct phy_device *phydev = netdev->phydev;
|
|
struct usbnet *dev = netdev_priv(netdev);
|
|
struct ax88172a_private *priv = dev->driver_priv;
|
|
u16 mode = 0;
|
|
|
|
if (phydev->link) {
|
|
mode = AX88772_MEDIUM_DEFAULT;
|
|
|
|
if (phydev->duplex == DUPLEX_HALF)
|
|
mode &= ~AX_MEDIUM_FD;
|
|
|
|
if (phydev->speed != SPEED_100)
|
|
mode &= ~AX_MEDIUM_PS;
|
|
}
|
|
|
|
if (mode != priv->oldmode) {
|
|
asix_write_medium_mode(dev, mode);
|
|
priv->oldmode = mode;
|
|
netdev_dbg(netdev, "speed %u duplex %d, setting mode to 0x%04x\n",
|
|
phydev->speed, phydev->duplex, mode);
|
|
phy_print_status(phydev);
|
|
}
|
|
}
|
|
|
|
static void ax88172a_status(struct usbnet *dev, struct urb *urb)
|
|
{
|
|
/* link changes are detected by polling the phy */
|
|
}
|
|
|
|
/* use phylib infrastructure */
|
|
static int ax88172a_init_mdio(struct usbnet *dev)
|
|
{
|
|
struct ax88172a_private *priv = dev->driver_priv;
|
|
int ret, i;
|
|
|
|
priv->mdio = mdiobus_alloc();
|
|
if (!priv->mdio) {
|
|
netdev_err(dev->net, "Could not allocate MDIO bus\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
priv->mdio->priv = (void *)dev;
|
|
priv->mdio->read = &asix_mdio_bus_read;
|
|
priv->mdio->write = &asix_mdio_bus_write;
|
|
priv->mdio->name = "Asix MDIO Bus";
|
|
/* mii bus name is usb-<usb bus number>-<usb device number> */
|
|
snprintf(priv->mdio->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
|
|
dev->udev->bus->busnum, dev->udev->devnum);
|
|
|
|
priv->mdio->irq = kzalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
|
|
if (!priv->mdio->irq) {
|
|
ret = -ENOMEM;
|
|
goto mfree;
|
|
}
|
|
for (i = 0; i < PHY_MAX_ADDR; i++)
|
|
priv->mdio->irq[i] = PHY_POLL;
|
|
|
|
ret = mdiobus_register(priv->mdio);
|
|
if (ret) {
|
|
netdev_err(dev->net, "Could not register MDIO bus\n");
|
|
goto ifree;
|
|
}
|
|
|
|
netdev_info(dev->net, "registered mdio bus %s\n", priv->mdio->id);
|
|
return 0;
|
|
|
|
ifree:
|
|
kfree(priv->mdio->irq);
|
|
mfree:
|
|
mdiobus_free(priv->mdio);
|
|
return ret;
|
|
}
|
|
|
|
static void ax88172a_remove_mdio(struct usbnet *dev)
|
|
{
|
|
struct ax88172a_private *priv = dev->driver_priv;
|
|
|
|
netdev_info(dev->net, "deregistering mdio bus %s\n", priv->mdio->id);
|
|
mdiobus_unregister(priv->mdio);
|
|
kfree(priv->mdio->irq);
|
|
mdiobus_free(priv->mdio);
|
|
}
|
|
|
|
static const struct net_device_ops ax88172a_netdev_ops = {
|
|
.ndo_open = usbnet_open,
|
|
.ndo_stop = usbnet_stop,
|
|
.ndo_start_xmit = usbnet_start_xmit,
|
|
.ndo_tx_timeout = usbnet_tx_timeout,
|
|
.ndo_change_mtu = usbnet_change_mtu,
|
|
.ndo_set_mac_address = asix_set_mac_address,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_do_ioctl = ax88172a_ioctl,
|
|
.ndo_set_rx_mode = asix_set_multicast,
|
|
};
|
|
|
|
static int ax88172a_get_settings(struct net_device *net,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
if (!net->phydev)
|
|
return -ENODEV;
|
|
|
|
return phy_ethtool_gset(net->phydev, cmd);
|
|
}
|
|
|
|
static int ax88172a_set_settings(struct net_device *net,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
if (!net->phydev)
|
|
return -ENODEV;
|
|
|
|
return phy_ethtool_sset(net->phydev, cmd);
|
|
}
|
|
|
|
static int ax88172a_nway_reset(struct net_device *net)
|
|
{
|
|
if (!net->phydev)
|
|
return -ENODEV;
|
|
|
|
return phy_start_aneg(net->phydev);
|
|
}
|
|
|
|
static const struct ethtool_ops ax88172a_ethtool_ops = {
|
|
.get_drvinfo = asix_get_drvinfo,
|
|
.get_link = usbnet_get_link,
|
|
.get_msglevel = usbnet_get_msglevel,
|
|
.set_msglevel = usbnet_set_msglevel,
|
|
.get_wol = asix_get_wol,
|
|
.set_wol = asix_set_wol,
|
|
.get_eeprom_len = asix_get_eeprom_len,
|
|
.get_eeprom = asix_get_eeprom,
|
|
.set_eeprom = asix_set_eeprom,
|
|
.get_settings = ax88172a_get_settings,
|
|
.set_settings = ax88172a_set_settings,
|
|
.nway_reset = ax88172a_nway_reset,
|
|
};
|
|
|
|
static int ax88172a_reset_phy(struct usbnet *dev, int embd_phy)
|
|
{
|
|
int ret;
|
|
|
|
ret = asix_sw_reset(dev, AX_SWRESET_IPPD);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
msleep(150);
|
|
ret = asix_sw_reset(dev, AX_SWRESET_CLEAR);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
msleep(150);
|
|
|
|
ret = asix_sw_reset(dev, embd_phy ? AX_SWRESET_IPRL : AX_SWRESET_IPPD);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int ax88172a_bind(struct usbnet *dev, struct usb_interface *intf)
|
|
{
|
|
int ret;
|
|
u8 buf[ETH_ALEN];
|
|
struct ax88172a_private *priv;
|
|
|
|
usbnet_get_endpoints(dev, intf);
|
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
dev->driver_priv = priv;
|
|
|
|
/* Get the MAC address */
|
|
ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf);
|
|
if (ret < 0) {
|
|
netdev_err(dev->net, "Failed to read MAC address: %d\n", ret);
|
|
goto free;
|
|
}
|
|
memcpy(dev->net->dev_addr, buf, ETH_ALEN);
|
|
|
|
dev->net->netdev_ops = &ax88172a_netdev_ops;
|
|
dev->net->ethtool_ops = &ax88172a_ethtool_ops;
|
|
|
|
/* are we using the internal or the external phy? */
|
|
ret = asix_read_cmd(dev, AX_CMD_SW_PHY_STATUS, 0, 0, 1, buf);
|
|
if (ret < 0) {
|
|
netdev_err(dev->net, "Failed to read software interface selection register: %d\n",
|
|
ret);
|
|
goto free;
|
|
}
|
|
|
|
netdev_dbg(dev->net, "AX_CMD_SW_PHY_STATUS = 0x%02x\n", buf[0]);
|
|
switch (buf[0] & AX_PHY_SELECT_MASK) {
|
|
case AX_PHY_SELECT_INTERNAL:
|
|
netdev_dbg(dev->net, "use internal phy\n");
|
|
priv->use_embdphy = 1;
|
|
break;
|
|
case AX_PHY_SELECT_EXTERNAL:
|
|
netdev_dbg(dev->net, "use external phy\n");
|
|
priv->use_embdphy = 0;
|
|
break;
|
|
default:
|
|
netdev_err(dev->net, "Interface mode not supported by driver\n");
|
|
ret = -ENOTSUPP;
|
|
goto free;
|
|
}
|
|
|
|
priv->phy_addr = asix_read_phy_addr(dev, priv->use_embdphy);
|
|
ax88172a_reset_phy(dev, priv->use_embdphy);
|
|
|
|
/* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
|
|
if (dev->driver_info->flags & FLAG_FRAMING_AX) {
|
|
/* hard_mtu is still the default - the device does not support
|
|
jumbo eth frames */
|
|
dev->rx_urb_size = 2048;
|
|
}
|
|
|
|
/* init MDIO bus */
|
|
ret = ax88172a_init_mdio(dev);
|
|
if (ret)
|
|
goto free;
|
|
|
|
return 0;
|
|
|
|
free:
|
|
kfree(priv);
|
|
return ret;
|
|
}
|
|
|
|
static int ax88172a_stop(struct usbnet *dev)
|
|
{
|
|
struct ax88172a_private *priv = dev->driver_priv;
|
|
|
|
netdev_dbg(dev->net, "Stopping interface\n");
|
|
|
|
if (priv->phydev) {
|
|
netdev_info(dev->net, "Disconnecting from phy %s\n",
|
|
priv->phy_name);
|
|
phy_stop(priv->phydev);
|
|
phy_disconnect(priv->phydev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ax88172a_unbind(struct usbnet *dev, struct usb_interface *intf)
|
|
{
|
|
struct ax88172a_private *priv = dev->driver_priv;
|
|
|
|
ax88172a_remove_mdio(dev);
|
|
kfree(priv);
|
|
}
|
|
|
|
static int ax88172a_reset(struct usbnet *dev)
|
|
{
|
|
struct asix_data *data = (struct asix_data *)&dev->data;
|
|
struct ax88172a_private *priv = dev->driver_priv;
|
|
int ret;
|
|
u16 rx_ctl;
|
|
|
|
ax88172a_reset_phy(dev, priv->use_embdphy);
|
|
|
|
msleep(150);
|
|
rx_ctl = asix_read_rx_ctl(dev);
|
|
netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
|
|
ret = asix_write_rx_ctl(dev, 0x0000);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
rx_ctl = asix_read_rx_ctl(dev);
|
|
netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
|
|
|
|
msleep(150);
|
|
|
|
ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
|
|
AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
|
|
AX88772_IPG2_DEFAULT, 0, NULL);
|
|
if (ret < 0) {
|
|
netdev_err(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
|
|
goto out;
|
|
}
|
|
|
|
/* Rewrite MAC address */
|
|
memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
|
|
ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
|
|
data->mac_addr);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* Set RX_CTL to default values with 2k buffer, and enable cactus */
|
|
ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
rx_ctl = asix_read_rx_ctl(dev);
|
|
netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
|
|
rx_ctl);
|
|
|
|
rx_ctl = asix_read_medium_status(dev);
|
|
netdev_dbg(dev->net, "Medium Status is 0x%04x after all initializations\n",
|
|
rx_ctl);
|
|
|
|
/* Connect to PHY */
|
|
snprintf(priv->phy_name, 20, PHY_ID_FMT,
|
|
priv->mdio->id, priv->phy_addr);
|
|
|
|
priv->phydev = phy_connect(dev->net, priv->phy_name,
|
|
&ax88172a_adjust_link,
|
|
PHY_INTERFACE_MODE_MII);
|
|
if (IS_ERR(priv->phydev)) {
|
|
netdev_err(dev->net, "Could not connect to PHY device %s\n",
|
|
priv->phy_name);
|
|
ret = PTR_ERR(priv->phydev);
|
|
goto out;
|
|
}
|
|
|
|
netdev_info(dev->net, "Connected to phy %s\n", priv->phy_name);
|
|
|
|
/* During power-up, the AX88172A set the power down (BMCR_PDOWN)
|
|
* bit of the PHY. Bring the PHY up again.
|
|
*/
|
|
genphy_resume(priv->phydev);
|
|
phy_start(priv->phydev);
|
|
|
|
return 0;
|
|
|
|
out:
|
|
return ret;
|
|
|
|
}
|
|
|
|
static int ax88172a_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
|
|
{
|
|
struct ax88172a_private *dp = dev->driver_priv;
|
|
struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
|
|
|
|
return asix_rx_fixup_internal(dev, skb, rx);
|
|
}
|
|
|
|
const struct driver_info ax88172a_info = {
|
|
.description = "ASIX AX88172A USB 2.0 Ethernet",
|
|
.bind = ax88172a_bind,
|
|
.reset = ax88172a_reset,
|
|
.stop = ax88172a_stop,
|
|
.unbind = ax88172a_unbind,
|
|
.status = ax88172a_status,
|
|
.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
|
|
FLAG_MULTI_PACKET,
|
|
.rx_fixup = ax88172a_rx_fixup,
|
|
.tx_fixup = asix_tx_fixup,
|
|
};
|