/*
* ASIX AX8817X based USB 2.0 Ethernet Devices
* Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
* Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// #define DEBUG // error path messages, extra info
// #define VERBOSE // more; success messages
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kmod.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/workqueue.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/crc32.h>
#include "usbnet.h"
/* ASIX AX8817X based USB 2.0 Ethernet Devices */
#define AX_CMD_SET_SW_MII 0x06
#define AX_CMD_READ_MII_REG 0x07
#define AX_CMD_WRITE_MII_REG 0x08
#define AX_CMD_SET_HW_MII 0x0a
#define AX_CMD_READ_EEPROM 0x0b
#define AX_CMD_WRITE_EEPROM 0x0c
#define AX_CMD_WRITE_ENABLE 0x0d
#define AX_CMD_WRITE_DISABLE 0x0e
#define AX_CMD_WRITE_RX_CTL 0x10
#define AX_CMD_READ_IPG012 0x11
#define AX_CMD_WRITE_IPG0 0x12
#define AX_CMD_WRITE_IPG1 0x13
#define AX_CMD_WRITE_IPG2 0x14
#define AX_CMD_WRITE_MULTI_FILTER 0x16
#define AX_CMD_READ_NODE_ID 0x17
#define AX_CMD_READ_PHY_ID 0x19
#define AX_CMD_READ_MEDIUM_STATUS 0x1a
#define AX_CMD_WRITE_MEDIUM_MODE 0x1b
#define AX_CMD_READ_MONITOR_MODE 0x1c
#define AX_CMD_WRITE_MONITOR_MODE 0x1d
#define AX_CMD_WRITE_GPIOS 0x1f
#define AX_CMD_SW_RESET 0x20
#define AX_CMD_SW_PHY_STATUS 0x21
#define AX_CMD_SW_PHY_SELECT 0x22
#define AX88772_CMD_READ_NODE_ID 0x13
#define AX_MONITOR_MODE 0x01
#define AX_MONITOR_LINK 0x02
#define AX_MONITOR_MAGIC 0x04
#define AX_MONITOR_HSFS 0x10
/* AX88172 Medium Status Register values */
#define AX_MEDIUM_FULL_DUPLEX 0x02
#define AX_MEDIUM_TX_ABORT_ALLOW 0x04
#define AX_MEDIUM_FLOW_CONTROL_EN 0x10
#define AX_MCAST_FILTER_SIZE 8
#define AX_MAX_MCAST 64
#define AX_EEPROM_LEN 0x40
#define AX_SWRESET_CLEAR 0x00
#define AX_SWRESET_RR 0x01
#define AX_SWRESET_RT 0x02
#define AX_SWRESET_PRTE 0x04
#define AX_SWRESET_PRL 0x08
#define AX_SWRESET_BZ 0x10
#define AX_SWRESET_IPRL 0x20
#define AX_SWRESET_IPPD 0x40
#define AX88772_IPG0_DEFAULT 0x15
#define AX88772_IPG1_DEFAULT 0x0c
#define AX88772_IPG2_DEFAULT 0x12
#define AX88772_MEDIUM_FULL_DUPLEX 0x0002
#define AX88772_MEDIUM_RESERVED 0x0004
#define AX88772_MEDIUM_RX_FC_ENABLE 0x0010
#define AX88772_MEDIUM_TX_FC_ENABLE 0x0020
#define AX88772_MEDIUM_PAUSE_FORMAT 0x0080
#define AX88772_MEDIUM_RX_ENABLE 0x0100
#define AX88772_MEDIUM_100MB 0x0200
#define AX88772_MEDIUM_DEFAULT \
(AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
#define AX_EEPROM_MAGIC 0xdeadbeef
/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
struct ax8817x_data {
u8 multi_filter[AX_MCAST_FILTER_SIZE];
};
struct ax88172_int_data {
u16 res1;
u8 link;
u16 res2;
u8 status;
u16 res3;
} __attribute__ ((packed));
static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
u16 size, void *data)
{
return usb_control_msg(
dev->udev,
usb_rcvctrlpipe(dev->udev, 0),
cmd,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
data,
size,
USB_CTRL_GET_TIMEOUT);
}
static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
u16 size, void *data)
{
return usb_control_msg(
dev->udev,
usb_sndctrlpipe(dev->udev, 0),
cmd,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
data,
size,
USB_CTRL_SET_TIMEOUT);
}
static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
{
struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
if (urb->status < 0)
printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
urb->status);
kfree(req);
usb_free_urb(urb);
}
static void ax8817x_status(struct usbnet *dev, struct urb *urb)
{
struct ax88172_int_data *event;
int link;
if (urb->actual_length < 8)
return;
event = urb->transfer_buffer;
link = event->link & 0x01;
if (netif_carrier_ok(dev->net) != link) {
if (link) {
netif_carrier_on(dev->net);
usbnet_defer_kevent (dev, EVENT_LINK_RESET );
} else
netif_carrier_off(dev->net);
devdbg(dev, "ax8817x - Link Status is: %d", link);
}
}
static void
ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
u16 size, void *data)
{
struct usb_ctrlrequest *req;
int status;
struct urb *urb;
if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
devdbg(dev, "Error allocating URB in write_cmd_async!");
return;
}
if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
deverr(dev, "Failed to allocate memory for control request");
usb_free_urb(urb);
return;
}
req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
req->bRequest = cmd;
req->wValue = cpu_to_le16(value);
req->wIndex = cpu_to_le16(index);
req->wLength = cpu_to_le16(size);
usb_fill_control_urb(urb, dev->udev,
usb_sndctrlpipe(dev->udev, 0),
(void *)req, data, size,
ax8817x_async_cmd_callback, req);
if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
deverr(dev, "Error submitting the control message: status=%d",
status);
kfree(req);
usb_free_urb(urb);
}
}
static void ax8817x_set_multicast(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
u8 rx_ctl = 0x8c;
if (net->flags & IFF_PROMISC) {
rx_ctl |= 0x01;
} else if (net->flags & IFF_ALLMULTI
|| net->mc_count > AX_MAX_MCAST) {
rx_ctl |= 0x02;
} else if (net->mc_count == 0) {
/* just broadcast and directed */
} else {
/* We use the 20 byte dev->data
* for our 8 byte filter buffer
* to avoid allocating memory that
* is tricky to free later */
struct dev_mc_list *mc_list = net->mc_list;
u32 crc_bits;
int i;
memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
/* Build the multicast hash filter. */
for (i = 0; i < net->mc_count; i++) {
crc_bits =
ether_crc(ETH_ALEN,
mc_list->dmi_addr) >> 26;
data->multi_filter[crc_bits >> 3] |=
1 << (crc_bits & 7);
mc_list = mc_list->next;
}
ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
AX_MCAST_FILTER_SIZE, data->multi_filter);
rx_ctl |= 0x10;
}
ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
}
static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
{
struct usbnet *dev = netdev_priv(netdev);
u16 res;
u8 buf[1];
ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
(__u16)loc, 2, (u16 *)&res);
ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
return res & 0xffff;
}
/* same as above, but converts resulting value to cpu byte order */
static int ax8817x_mdio_read_le(struct net_device *netdev, int phy_id, int loc)
{
return le16_to_cpu(ax8817x_mdio_read(netdev,phy_id, loc));
}
static void
ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
{
struct usbnet *dev = netdev_priv(netdev);
u16 res = val;
u8 buf[1];
ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
(__u16)loc, 2, (u16 *)&res);
ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
}
/* same as above, but converts new value to le16 byte order before writing */
static void
ax8817x_mdio_write_le(struct net_device *netdev, int phy_id, int loc, int val)
{
ax8817x_mdio_write( netdev, phy_id, loc, cpu_to_le16(val) );
}
static int ax88172_link_reset(struct usbnet *dev)
{
u16 lpa;
u16 adv;
u16 res;
u8 mode;
mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
lpa = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
adv = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
res = mii_nway_result(lpa|adv);
if (res & LPA_DUPLEX)
mode |= AX_MEDIUM_FULL_DUPLEX;
ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
return 0;
}
static void
ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
{
struct usbnet *dev = netdev_priv(net);
u8 opt;
if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
wolinfo->supported = 0;
wolinfo->wolopts = 0;
return;
}
wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
wolinfo->wolopts = 0;
if (opt & AX_MONITOR_MODE) {
if (opt & AX_MONITOR_LINK)
wolinfo->wolopts |= WAKE_PHY;
if (opt & AX_MONITOR_MAGIC)
wolinfo->wolopts |= WAKE_MAGIC;
}
}
static int
ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
{
struct usbnet *dev = netdev_priv(net);
u8 opt = 0;
u8 buf[1];
if (wolinfo->wolopts & WAKE_PHY)
opt |= AX_MONITOR_LINK;
if (wolinfo->wolopts & WAKE_MAGIC)
opt |= AX_MONITOR_MAGIC;
if (opt != 0)
opt |= AX_MONITOR_MODE;
if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
opt, 0, 0, &buf) < 0)
return -EINVAL;
return 0;
}
static int ax8817x_get_eeprom_len(struct net_device *net)
{
return AX_EEPROM_LEN;
}
static int ax8817x_get_eeprom(struct net_device *net,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct usbnet *dev = netdev_priv(net);
u16 *ebuf = (u16 *)data;
int i;
/* Crude hack to ensure that we don't overwrite memory
* if an odd length is supplied
*/
if (eeprom->len % 2)
return -EINVAL;
eeprom->magic = AX_EEPROM_MAGIC;
/* ax8817x returns 2 bytes from eeprom on read */
for (i=0; i < eeprom->len / 2; i++) {
if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
return -EINVAL;
}
return 0;
}
static void ax8817x_get_drvinfo (struct net_device *net,
struct ethtool_drvinfo *info)
{
/* Inherit standard device info */
usbnet_get_drvinfo(net, info);
info->eedump_len = 0x3e;
}
static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
{
struct usbnet *dev = netdev_priv(net);
return mii_ethtool_gset(&dev->mii,cmd);
}
static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
{
struct usbnet *dev = netdev_priv(net);
return mii_ethtool_sset(&dev->mii,cmd);
}
/* We need to override some ethtool_ops so we require our
own structure so we don't interfere with other usbnet
devices that may be connected at the same time. */
static struct ethtool_ops ax8817x_ethtool_ops = {
.get_drvinfo = ax8817x_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_msglevel = usbnet_get_msglevel,
.set_msglevel = usbnet_set_msglevel,
.get_wol = ax8817x_get_wol,
.set_wol = ax8817x_set_wol,
.get_eeprom_len = ax8817x_get_eeprom_len,
.get_eeprom = ax8817x_get_eeprom,
.get_settings = ax8817x_get_settings,
.set_settings = ax8817x_set_settings,
};
static int ax8817x_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
{
struct usbnet *dev = netdev_priv(net);
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
}
static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret = 0;
void *buf;
int i;
unsigned long gpio_bits = dev->driver_info->data;
usbnet_get_endpoints(dev,intf);
buf = kmalloc(ETH_ALEN, GFP_KERNEL);
if(!buf) {
ret = -ENOMEM;
goto out1;
}
/* Toggle the GPIOs in a manufacturer/model specific way */
for (i = 2; i >= 0; i--) {
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
(gpio_bits >> (i * 8)) & 0xff, 0, 0,
buf)) < 0)
goto out2;
msleep(5);
}
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL,
0x80, 0, 0, buf)) < 0) {
dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
goto out2;
}
/* Get the MAC address */
memset(buf, 0, ETH_ALEN);
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID,
0, 0, 6, buf)) < 0) {
dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
goto out2;
}
memcpy(dev->net->dev_addr, buf, ETH_ALEN);
/* Get the PHY id */
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID,
0, 0, 2, buf)) < 0) {
dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
goto out2;
} else if (ret < 2) {
/* this should always return 2 bytes */
dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
ret);
ret = -EIO;
goto out2;
}
/* Initialize MII structure */
dev->mii.dev = dev->net;
dev->mii.mdio_read = ax8817x_mdio_read;
dev->mii.mdio_write = ax8817x_mdio_write;
dev->mii.phy_id_mask = 0x3f;
dev->mii.reg_num_mask = 0x1f;
dev->mii.phy_id = *((u8 *)buf + 1);
dev->net->do_ioctl = ax8817x_ioctl;
dev->net->set_multicast_list = ax8817x_set_multicast;
dev->net->ethtool_ops = &ax8817x_ethtool_ops;
ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
mii_nway_restart(&dev->mii);
return 0;
out2:
kfree(buf);
out1:
return ret;
}
static struct ethtool_ops ax88772_ethtool_ops = {
.get_drvinfo = ax8817x_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_msglevel = usbnet_get_msglevel,
.set_msglevel = usbnet_set_msglevel,
.get_wol = ax8817x_get_wol,
.set_wol = ax8817x_set_wol,
.get_eeprom_len = ax8817x_get_eeprom_len,
.get_eeprom = ax8817x_get_eeprom,
.get_settings = ax8817x_get_settings,
.set_settings = ax8817x_set_settings,
};
static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret;
void *buf;
usbnet_get_endpoints(dev,intf);
buf = kmalloc(6, GFP_KERNEL);
if(!buf) {
dbg ("Cannot allocate memory for buffer");
ret = -ENOMEM;
goto out1;
}
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
0x00B0, 0, 0, buf)) < 0)
goto out2;
msleep(5);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT,
0x0001, 0, 0, buf)) < 0) {
dbg("Select PHY #1 failed: %d", ret);
goto out2;
}
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD,
0, 0, buf)) < 0) {
dbg("Failed to power down internal PHY: %d", ret);
goto out2;
}
msleep(150);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR,
0, 0, buf)) < 0) {
dbg("Failed to perform software reset: %d", ret);
goto out2;
}
msleep(150);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET,
AX_SWRESET_IPRL | AX_SWRESET_PRL,
0, 0, buf)) < 0) {
dbg("Failed to set Internal/External PHY reset control: %d",
ret);
goto out2;
}
msleep(150);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL,
0x0000, 0, 0, buf)) < 0) {
dbg("Failed to reset RX_CTL: %d", ret);
goto out2;
}
/* Get the MAC address */
memset(buf, 0, ETH_ALEN);
if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID,
0, 0, ETH_ALEN, buf)) < 0) {
dbg("Failed to read MAC address: %d", ret);
goto out2;
}
memcpy(dev->net->dev_addr, buf, ETH_ALEN);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII,
0, 0, 0, buf)) < 0) {
dbg("Enabling software MII failed: %d", ret);
goto out2;
}
if (((ret = ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG,
0x0010, 2, 2, buf)) < 0)
|| (*((u16 *)buf) != 0x003b)) {
dbg("Read PHY register 2 must be 0x3b00: %d", ret);
goto out2;
}
/* Initialize MII structure */
dev->mii.dev = dev->net;
dev->mii.mdio_read = ax8817x_mdio_read;
dev->mii.mdio_write = ax8817x_mdio_write;
dev->mii.phy_id_mask = 0xff;
dev->mii.reg_num_mask = 0xff;
dev->net->do_ioctl = ax8817x_ioctl;
/* Get the PHY id */
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID,
0, 0, 2, buf)) < 0) {
dbg("Error reading PHY ID: %02x", ret);
goto out2;
} else if (ret < 2) {
/* this should always return 2 bytes */
dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
ret);
ret = -EIO;
goto out2;
}
dev->mii.phy_id = *((u8 *)buf + 1);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL,
0, 0, buf)) < 0) {
dbg("Set external PHY reset pin level: %d", ret);
goto out2;
}
msleep(150);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET,
AX_SWRESET_IPRL | AX_SWRESET_PRL,
0, 0, buf)) < 0) {
dbg("Set Internal/External PHY reset control: %d", ret);
goto out2;
}
msleep(150);
dev->net->set_multicast_list = ax8817x_set_multicast;
dev->net->ethtool_ops = &ax88772_ethtool_ops;
ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
ADVERTISE_ALL | ADVERTISE_CSMA);
mii_nway_restart(&dev->mii);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
dbg("Write medium mode register: %d", ret);
goto out2;
}
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0,
AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
goto out2;
}
if ((ret =
ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
dbg("Failed to set hardware MII: %02x", ret);
goto out2;
}
/* Set RX_CTL to default values with 2k buffer, and enable cactus */
if ((ret =
ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
buf)) < 0) {
dbg("Reset RX_CTL failed: %d", ret);
goto out2;
}
kfree(buf);
/* 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;
}
return 0;
out2:
kfree(buf);
out1:
return ret;
}
static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
u8 *head;
u32 header;
char *packet;
struct sk_buff *ax_skb;
u16 size;
head = (u8 *) skb->data;
memcpy(&header, head, sizeof(header));
le32_to_cpus(&header);
packet = head + sizeof(header);
skb_pull(skb, 4);
while (skb->len > 0) {
if ((short)(header & 0x0000ffff) !=
~((short)((header & 0xffff0000) >> 16))) {
devdbg(dev,"header length data is error");
}
/* get the packet length */
size = (u16) (header & 0x0000ffff);
if ((skb->len) - ((size + 1) & 0xfffe) == 0)
return 2;
if (size > ETH_FRAME_LEN) {
devdbg(dev,"invalid rx length %d", size);
return 0;
}
ax_skb = skb_clone(skb, GFP_ATOMIC);
if (ax_skb) {
ax_skb->len = size;
ax_skb->data = packet;
ax_skb->tail = packet + size;
usbnet_skb_return(dev, ax_skb);
} else {
return 0;
}
skb_pull(skb, (size + 1) & 0xfffe);
if (skb->len == 0)
break;
head = (u8 *) skb->data;
memcpy(&header, head, sizeof(header));
le32_to_cpus(&header);
packet = head + sizeof(header);
skb_pull(skb, 4);
}
if (skb->len < 0) {
devdbg(dev,"invalid rx length %d", skb->len);
return 0;
}
return 1;
}
static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
gfp_t flags)
{
int padlen;
int headroom = skb_headroom(skb);
int tailroom = skb_tailroom(skb);
u32 packet_len;
u32 padbytes = 0xffff0000;
padlen = ((skb->len + 4) % 512) ? 0 : 4;
if ((!skb_cloned(skb))
&& ((headroom + tailroom) >= (4 + padlen))) {
if ((headroom < 4) || (tailroom < padlen)) {
skb->data = memmove(skb->head + 4, skb->data, skb->len);
skb->tail = skb->data + skb->len;
}
} else {
struct sk_buff *skb2;
skb2 = skb_copy_expand(skb, 4, padlen, flags);
dev_kfree_skb_any(skb);
skb = skb2;
if (!skb)
return NULL;
}
skb_push(skb, 4);
packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
memcpy(skb->data, &packet_len, sizeof(packet_len));
if ((skb->len % 512) == 0) {
memcpy( skb->tail, &padbytes, sizeof(padbytes));
skb_put(skb, sizeof(padbytes));
}
return skb;
}
static int ax88772_link_reset(struct usbnet *dev)
{
u16 lpa;
u16 adv;
u16 res;
u16 mode;
mode = AX88772_MEDIUM_DEFAULT;
lpa = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
adv = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
res = mii_nway_result(lpa|adv);
if ((res & LPA_DUPLEX) == 0)
mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
if ((res & LPA_100) == 0)
mode &= ~AX88772_MEDIUM_100MB;
ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
return 0;
}
static const struct driver_info ax8817x_info = {
.description = "ASIX AX8817x USB 2.0 Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x00130103,
};
static const struct driver_info dlink_dub_e100_info = {
.description = "DLink DUB-E100 USB Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x009f9d9f,
};
static const struct driver_info netgear_fa120_info = {
.description = "Netgear FA-120 USB Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x00130103,
};
static const struct driver_info hawking_uf200_info = {
.description = "Hawking UF200 USB Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x001f1d1f,
};
static const struct driver_info ax88772_info = {
.description = "ASIX AX88772 USB 2.0 Ethernet",
.bind = ax88772_bind,
.status = ax8817x_status,
.link_reset = ax88772_link_reset,
.reset = ax88772_link_reset,
.flags = FLAG_ETHER | FLAG_FRAMING_AX,
.rx_fixup = ax88772_rx_fixup,
.tx_fixup = ax88772_tx_fixup,
.data = 0x00130103,
};
static const struct usb_device_id products [] = {
{
// Linksys USB200M
USB_DEVICE (0x077b, 0x2226),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// Netgear FA120
USB_DEVICE (0x0846, 0x1040),
.driver_info = (unsigned long) &netgear_fa120_info,
}, {
// DLink DUB-E100
USB_DEVICE (0x2001, 0x1a00),
.driver_info = (unsigned long) &dlink_dub_e100_info,
}, {
// Intellinet, ST Lab USB Ethernet
USB_DEVICE (0x0b95, 0x1720),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// Hawking UF200, TrendNet TU2-ET100
USB_DEVICE (0x07b8, 0x420a),
.driver_info = (unsigned long) &hawking_uf200_info,
}, {
// Billionton Systems, USB2AR
USB_DEVICE (0x08dd, 0x90ff),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// ATEN UC210T
USB_DEVICE (0x0557, 0x2009),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// Buffalo LUA-U2-KTX
USB_DEVICE (0x0411, 0x003d),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
USB_DEVICE (0x6189, 0x182d),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// corega FEther USB2-TX
USB_DEVICE (0x07aa, 0x0017),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// Surecom EP-1427X-2
USB_DEVICE (0x1189, 0x0893),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// goodway corp usb gwusb2e
USB_DEVICE (0x1631, 0x6200),
.driver_info = (unsigned long) &ax8817x_info,
}, {
// ASIX AX88772 10/100
USB_DEVICE (0x0b95, 0x7720),
.driver_info = (unsigned long) &ax88772_info,
},
{ }, // END
};
MODULE_DEVICE_TABLE(usb, products);
static struct usb_driver asix_driver = {
.owner = THIS_MODULE,
.name = "asix",
.id_table = products,
.probe = usbnet_probe,
.suspend = usbnet_suspend,
.resume = usbnet_resume,
.disconnect = usbnet_disconnect,
};
static int __init asix_init(void)
{
return usb_register(&asix_driver);
}
module_init(asix_init);
static void __exit asix_exit(void)
{
usb_deregister(&asix_driver);
}
module_exit(asix_exit);
MODULE_AUTHOR("David Hollis");
MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
MODULE_LICENSE("GPL");
