Merge gregkh@master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6

1 files changed, 948 insertions, 0 deletions

diff --git a/drivers/usb/net/asix.c b/drivers/usb/net/asix.c
new file mode 100644
index 000000000000..861f00a43750
--- /dev/null
+++ b/drivers/usb/net/asix.c
@@ -0,0 +1,948 @@
+/*
+ * 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>
+#ifdef  CONFIG_USB_DEBUG
+#   define DEBUG
+#endif
+#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,
+                                        unsigned 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");
+