libertas_tf: usb specific functions

The libertas thin firmware only supports usb devices, but the usb functions have
been kept separate to ease future support for other devices.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 864 insertions, 0 deletions

diff --git a/drivers/net/wireless/libertas_tf/if_usb.c b/drivers/net/wireless/libertas_tf/if_usb.c
new file mode 100644
index 000000000000..1cc03a8dd67a
--- /dev/null
+++ b/drivers/net/wireless/libertas_tf/if_usb.c
@@ -0,0 +1,766 @@
+/*
+ *  Copyright (C) 2008, cozybit Inc.
+ *  Copyright (C) 2003-2006, Marvell International Ltd.
+ *
+ *  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.
+ */
+#include <linux/delay.h>
+#include <linux/moduleparam.h>
+#include <linux/firmware.h>
+#include <linux/netdevice.h>
+#include <linux/usb.h>
+
+#define DRV_NAME "lbtf_usb"
+
+#include "libertas_tf.h"
+#include "if_usb.h"
+
+#define MESSAGE_HEADER_LEN      4
+
+static char *lbtf_fw_name = "lbtf_usb.bin";
+module_param_named(fw_name, lbtf_fw_name, charp, 0644);
+
+static struct usb_device_id if_usb_table[] = {
+        /* Enter the device signature inside */
+        { USB_DEVICE(0x1286, 0x2001) },
+        { USB_DEVICE(0x05a3, 0x8388) },
+        {}      /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, if_usb_table);
+
+static void if_usb_receive(struct urb *urb);
+static void if_usb_receive_fwload(struct urb *urb);
+static int if_usb_prog_firmware(struct if_usb_card *cardp);
+static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
+                               uint8_t *payload, uint16_t nb);
+static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
+                        uint16_t nb, u8 data);
+static void if_usb_free(struct if_usb_card *cardp);
+static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
+static int if_usb_reset_device(struct if_usb_card *cardp);
+
+/**
+ *  if_usb_wrike_bulk_callback -  call back to handle URB status
+ *
+ *  @param urb          pointer to urb structure
+ */
+static void if_usb_write_bulk_callback(struct urb *urb)
+{
+        if (urb->status != 0)
+                printk(KERN_INFO "libertastf: URB in failure status: %d\n",
+                       urb->status);
+}
+
+/**
+ *  if_usb_free - free tx/rx urb, skb and rx buffer
+ *
+ *  @param cardp        pointer if_usb_card
+ */
+static void if_usb_free(struct if_usb_card *cardp)
+{
+        /* Unlink tx & rx urb */
+        usb_kill_urb(cardp->tx_urb);
+        usb_kill_urb(cardp->rx_urb);
+        usb_kill_urb(cardp->cmd_urb);
+
+        usb_free_urb(cardp->tx_urb);
+        cardp->tx_urb = NULL;
+
+        usb_free_urb(cardp->rx_urb);
+        cardp->rx_urb = NULL;
+
+        usb_free_urb(cardp->cmd_urb);
+        cardp->cmd_urb = NULL;
+
+        kfree(cardp->ep_out_buf);
+        cardp->ep_out_buf = NULL;
+}
+
+static void if_usb_setup_firmware(struct lbtf_private *priv)
+{
+        struct if_usb_card *cardp = priv->card;
+        struct cmd_ds_set_boot2_ver b2_cmd;
+
+        if_usb_submit_rx_urb(cardp);
+        b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
+        b2_cmd.action = 0;
+        b2_cmd.version = cardp->boot2_version;
+
+        if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
+                printk(KERN_INFO "libertastf: setting boot2 version failed\n");
+}
+
+static void if_usb_fw_timeo(unsigned long priv)
+{
+        struct if_usb_card *cardp = (void *)priv;
+
+        if (!cardp->fwdnldover)
+                /* Download timed out */
+                cardp->priv->surpriseremoved = 1;
+        wake_up(&cardp->fw_wq);
+}
+
+/**
+ *  if_usb_probe - sets the configuration values
+ *
+ *  @ifnum      interface number
+ *  @id         pointer to usb_device_id
+ *
+ *  Returns: 0 on success, error code on failure
+ */
+static int if_usb_probe(struct usb_interface *intf,
+                        const struct usb_device_id *id)
+{
+        struct usb_device *udev;
+        struct usb_host_interface *iface_desc;
+        struct usb_endpoint_descriptor *endpoint;
+        struct lbtf_private *priv;
+        struct if_usb_card *cardp;
+        int i;
+
+        udev = interface_to_usbdev(intf);
+
+        cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
+        if (!cardp)
+                goto error;
+
+        setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
+        init_waitqueue_head(&cardp->fw_wq);
+
+        cardp->udev = udev;
+        iface_desc = intf->cur_altsetting;
+
+        for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+                endpoint = &iface_desc->endpoint[i].desc;
+                if (usb_endpoint_is_bulk_in(endpoint)) {
+                        cardp->ep_in_size =
+                                le16_to_cpu(endpoint->wMaxPacketSize);
+                        cardp->ep_in = usb_endpoint_num(endpoint);
+                } else if (usb_endpoint_is_bulk_out(endpoint)) {
+                        cardp->ep_out_size =
+                                le16_to_cpu(endpoint->wMaxPacketSize);
+                        cardp->ep_out = usb_endpoint_num(endpoint);
+                }
+        }
+        if (!cardp->ep_out_size || !cardp->ep_in_size)
+                /* Endpoints not found */
+                goto dealloc;
+
+        cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!cardp->rx_urb)
+                goto dealloc;
+
+        cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!cardp->tx_urb)
+                goto dealloc;
+
+        cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!cardp->cmd_urb)
+                goto dealloc;
+
+        cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
+                                    GFP_KERNEL);
+        if (!cardp->ep_out_buf)
+                goto dealloc;
+
+        priv = lbtf_add_card(cardp, &udev->dev);
+        if (!priv)
+                goto dealloc;
+
+        cardp->priv = priv;
+
+        priv->hw_host_to_card = if_usb_host_to_card;
+        priv->hw_prog_firmware = if_usb_prog_firmware;
+        priv->hw_reset_device = if_usb_reset_device;
+        cardp->boot2_version = udev->descriptor.bcdDevice;
+
+        usb_get_dev(udev);
+        usb_set_intfdata(intf, cardp);
+
+        return 0;
+
+dealloc:
+        if_usb_free(cardp);
+error:
+        return -ENOMEM;
+}
+
+/**
+ *  if_usb_disconnect -  free resource and cleanup
+ *
+ *  @intf       USB interface structure
+ */
+static void if_usb_disconnect(struct usb_interface *intf)
+{
+        struct if_usb_card *cardp = usb_get_intfdata(intf);
+        struct lbtf_private *priv = (struct lbtf_private *) cardp->priv;
+
+        if_usb_reset_device(cardp);
+
+        if (priv)
+                lbtf_remove_card(priv);
+
+        /* Unlink and free urb */
+        if_usb_free(cardp);
+
+        usb_set_intfdata(intf, NULL);
+        usb_put_dev(interface_to_usbdev(intf));
+}
+
+/**
+ *  if_usb_send_fw_pkt -  This function downloads the FW
+ *
+ *  @priv       pointer to struct lbtf_private
+ *
+ *  Returns: 0
+ */
+static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
+{
+        struct fwdata *fwdata = cardp->ep_out_buf;
+        u8 *firmware = (u8 *) cardp->fw->data;
+
+        /* If we got a CRC failure on the last block, back
+           up and retry it */
+        if (!cardp->CRC_OK) {
+                cardp->totalbytes = cardp->fwlastblksent;
+                cardp->fwseqnum--;
+        }
+
+        /* struct fwdata (which we sent to the card) has an
+           extra __le32 field in between the header and the data,
+           which is not in the struct fwheader in the actual
+           firmware binary. Insert the seqnum in the middle... */
+        memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
+               sizeof(struct fwheader));
+
+        cardp->fwlastblksent = cardp->totalbytes;
+        cardp->totalbytes += sizeof(struct fwheader);
+
+        memcpy(fwdata->data, &firmware[cardp->totalbytes],
+               le32_to_cpu(fwdata->hdr.datalength));
+
+        fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
+        cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
+
+        usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
+                     le32_to_cpu(fwdata->hdr.datalength), 0);
+
+        if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK))
+                /* Host has finished FW downloading
+                 * Donwloading FW JUMP BLOCK
+                 */
+                cardp->fwfinalblk = 1;
+
+        return 0;
+}
+
+static int if_usb_reset_device(struct if_usb_card *cardp)
+{
+        struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4;
+        int ret;
+
+        *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
+
+        cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET);
+        cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset));
+        cmd->hdr.result = cpu_to_le16(0);
+        cmd->hdr.seqnum = cpu_to_le16(0x5a5a);
+        cmd->action = cpu_to_le16(CMD_ACT_HALT);
+        usb_tx_block(cardp, cardp->ep_out_buf,
+                     4 + sizeof(struct cmd_ds_802_11_reset), 0);
+
+        msleep(100);
+        ret = usb_reset_device(cardp->udev);
+        msleep(100);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(if_usb_reset_device);
+
+/**
+ *  usb_tx_block - transfer data to the device
+ *
+ *  @priv       pointer to struct lbtf_private
+ *  @payload    pointer to payload data
+ *  @nb         data length
+ *  @data       non-zero for data, zero for commands
+ *
+ *  Returns: 0 on success, nonzero otherwise.
+ */
+static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
+                        uint16_t nb, u8 data)
+{
+        struct urb *urb;
+
+        /* check if device is removed */
+        if (cardp->priv->surpriseremoved)
+                return -1;
+
+        if (data)
+                urb = cardp->tx_urb;
+        else
+                urb = cardp->cmd_urb;
+
+        usb_fill_bulk_urb(urb, cardp->udev,
+                          usb_sndbulkpipe(cardp->udev,
+                                          cardp->ep_out),
+                          payload, nb, if_usb_write_bulk_callback, cardp);
+
+        urb->transfer_flags |= URB_ZERO_PACKET;
+
+        if (usb_submit_urb(urb, GFP_ATOMIC))
+                return -1;
+        return 0;
+}
+
+static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
+                                  void (*callbackfn)(struct urb *urb))
+{
+        struct sk_buff *skb;
+
+        skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
+        if (!skb)
+                return -1;
+
+        cardp->rx_skb = skb;
+
+        /* Fill the receive configuration URB and initialise the Rx call back */
+        usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
+                          usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
+                          (void *) (skb->tail),
+                          MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp);
+
+        cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
+
+        if (usb_submit_urb(cardp->rx_urb, GFP_ATOMIC)) {
+                kfree_skb(skb);
+                cardp->rx_skb = NULL;
+                return -1;
+        } else
+                return 0;
+}
+
+static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
+{
+        return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
+}
+
+static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
+{
+        return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
+}
+
+static void if_usb_receive_fwload(struct urb *urb)
+{
+        struct if_usb_card *cardp = urb->context;
+        struct sk_buff *skb = cardp->rx_skb;
+        struct fwsyncheader *syncfwheader;
+        struct bootcmdresp bcmdresp;
+
+        if (urb->status) {
+                kfree_skb(skb);
+                return;
+        }
+
+        if (cardp->fwdnldover) {
+                __le32 *tmp = (__le32 *)(skb->data);
+
+                if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
+                    tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY))
+                        /* Firmware ready event received */
+                        wake_up(&cardp->fw_wq);
+                else
+                        if_usb_submit_rx_urb_fwload(cardp);
+                kfree_skb(skb);
+                return;
+        }
+        if (cardp->bootcmdresp <= 0) {
+                memcpy(&bcmdresp, skb->data, sizeof(bcmdresp));
+
+                if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
+                        kfree_skb(skb);
+                        if_usb_submit_rx_urb_fwload(cardp);
+                        cardp->bootcmdresp = 1;
+                        /* Received valid boot command response */
+                        return;
+                }
+                if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
+                        if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
+                            bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
+                            bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION))
+                                cardp->bootcmdresp = -1;
+                } else if (bcmdresp.cmd == BOOT_CMD_FW_BY_USB &&
+                           bcmdresp.result == BOOT_CMD_RESP_OK)
+                        cardp->bootcmdresp = 1;
+
+                kfree_skb(skb);
+                if_usb_submit_rx_urb_fwload(cardp);
+                return;
+        }
+
+        syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
+        if (!syncfwheader) {
+                kfree_skb(skb);
+                return;
+        }
+
+        memcpy(syncfwheader, skb->data, sizeof(struct fwsyncheader));
+
+        if (!syncfwheader->cmd)
+                cardp->CRC_OK = 1;
+        else
+                cardp->CRC_OK = 0;
+        kfree_skb(skb);
+
+        /* reschedule timer for 200ms hence */
+        mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
+
+        if (cardp->fwfinalblk) {
+                cardp->fwdnldover = 1;
+                goto exit;
+        }
+
+        if_usb_send_fw_pkt(cardp);
+
+ exit:
+        if_usb_submit_rx_urb_fwload(cardp);
+
+        kfree(syncfwheader);
+
+        return;
+}
+
+#define MRVDRV_MIN_PKT_LEN      30
+
+static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
+                                       struct if_usb_card *cardp,
+                                       struct lbtf_private *priv)
+{
+        if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
+            || recvlength < MRVDRV_MIN_PKT_LEN) {
+                kfree_skb(skb);
+                return;
+        }
+
+        skb_put(skb, recvlength);
+        skb_pull(skb, MESSAGE_HEADER_LEN);
+        lbtf_rx(priv, skb);
+}
+
+static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
+                                      struct sk_buff *skb,
+                                      struct if_usb_card *cardp,
+                                      struct lbtf_private *priv)
+{
+        if (recvlength > LBS_CMD_BUFFER_SIZE) {
+                kfree_skb(skb);
+                return;
+        }
+
+        if (!in_interrupt())
+                BUG();
+
+        spin_lock(&priv->driver_lock);
+        memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
+               recvlength - MESSAGE_HEADER_LEN);
+        kfree_skb(skb);
+        lbtf_cmd_response_rx(priv);
+        spin_unlock(&priv->driver_lock);
+}
+
+/**
+ *  if_usb_receive - read data received from the device.
+ *
+ *  @urb                pointer to struct urb
+ */
+static void if_usb_receive(struct urb *urb)
+{
+        struct if_usb_card *cardp = urb->context;
+        struct sk_buff *skb = cardp->rx_skb;
+        struct lbtf_private *priv = cardp->priv;
+        int recvlength = urb->actual_length;
+        uint8_t *recvbuff = NULL;
+        uint32_t recvtype = 0;
+        __le32 *pkt = (__le32 *) skb->data;
+
+        if (recvlength) {
+                if (urb->status) {
+                        kfree_skb(skb);
+                        goto setup_for_next;
+                }
+
+                recvbuff = skb->data;
+                recvtype = le32_to_cpu(pkt[0]);
+        } else if (urb->status) {
+                kfree_skb(skb);
+                return;
+        }
+
+        switch (recvtype) {
+        case CMD_TYPE_DATA:
+                process_cmdtypedata(recvlength, skb, cardp, priv);
+                break;
+
+        case CMD_TYPE_REQUEST:
+                process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
+                break;
+
+        case CMD_TYPE_INDICATION:
+        {
+                /* Event cause handling */
+                u32 event_cause = le32_to_cpu(pkt[1]);
+
+                /* Icky undocumented magic special case */
+                if (event_cause & 0xffff0000) {
+                        u16 tmp;
+                        u8 retrycnt;
+                        u8 failure;
+
+                        tmp = event_cause >> 16;
+                        retrycnt = tmp & 0x00ff;
+                        failure = (tmp & 0xff00) >> 8;
+                        lbtf_send_tx_feedback(priv, retrycnt, failure);
+                } else if (event_cause == LBTF_EVENT_BCN_SENT)
+                        lbtf_bcn_sent(priv);
+                else
+                        printk(KERN_DEBUG
+                               "Unsupported notification %d received\n",
+                               event_cause);
+                kfree_skb(skb);
+                break;
+        }
+        default:
+                printk(KERN_DEBUG "libertastf: unknown command type 0x%X\n",
+                             recvtype);
+                kfree_skb(skb);
+                break;
+        }
+
+setup_for_next:
+        if_usb_submit_rx_urb(cardp);
+}
+
+/**
+ *  if_usb_host_to_card -  Download data to the device
+ *
+ *  @priv               pointer to struct lbtf_private structure
+ *  @type               type of data
+ *  @buf                pointer to data buffer
+ *  @len                number of bytes
+ *
+ *  Returns: 0 on success, nonzero otherwise
+ */
+static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
+                               uint8_t *payload, uint16_t nb)
+{
+        struct if_usb_card *cardp = priv->card;
+        u8 data = 0;
+
+        if (type == MVMS_CMD) {
+                *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
+        } else {
+                *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
+                data = 1;
+        }
+
+        memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
+
+        return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN,
+                            data);
+}
+
+/**
+ *  if_usb_issue_boot_command - Issue boot command to Boot2.
+ *
+ *  @ivalue   1 boots from FW by USB-Download, 2 boots from FW in EEPROM.
+ *
+ *  Returns: 0
+ */
+static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
+{
+        struct bootcmd *bootcmd = cardp->ep_out_buf;
+
+        /* Prepare command */
+        bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
+        bootcmd->cmd = ivalue;
+        memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
+
+        /* Issue command */
+        usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd), 0);
+
+        return 0;
+}
+
+
+/**
+ *  check_fwfile_format - Check the validity of Boot2/FW image.
+ *
+ *  @data       pointer to image
+ *  @totlen     image length
+ *
+ *  Returns: 0 if the image is valid, nonzero otherwise.
+ */
+static int check_fwfile_format(const u8 *data, u32 totlen)
+{
+        u32 bincmd, exit;
+        u32 blksize, offset, len;
+        int ret;
+
+        ret = 1;
+        exit = len = 0;
+
+        do {
+                struct fwheader *fwh = (void *) data;
+
+                bincmd = le32_to_cpu(fwh->dnldcmd);
+                blksize = le32_to_cpu(fwh->datalength);
+                switch (bincmd) {
+                case FW_HAS_DATA_TO_RECV:
+                        offset = sizeof(struct fwheader) + blksize;
+                        data += offset;
+                        len += offset;
+                        if (len >= totlen)
+                                exit = 1;
+                        break;
+                case FW_HAS_LAST_BLOCK:
+                        exit = 1;
+                        ret = 0;
+                        break;
+                default:
+                        exit = 1;
+                        break;
+                }
+        } while (!exit);
+
+        if (ret)
+                printk(KERN_INFO
+                       "libertastf: firmware file format check failed\n");
+        return ret;
+}
+
+
+static int if_usb_prog_firmware(struct if_usb_card *cardp)
+{
+        int i = 0;
+        static int reset_count = 10;
+        int ret = 0;
+
+        ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev);
+        if (ret < 0) {
+                printk(KERN_INFO "libertastf: firmware %s not found\n",
+                       lbtf_fw_name);
+                goto done;
+        }
+
+        if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
+                goto release_fw;
+
+restart:
+        if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
+                ret = -1;
+                goto release_fw;
+        }
+
+        cardp->bootcmdresp = 0;
+        do {
+                int j = 0;
+                i++;
+                /* Issue Boot command = 1, Boot from Download-FW */
+                if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
+                /* wait for command response */
+                do {
+                        j++;
+                        msleep_interruptible(100);
+                } while (cardp->bootcmdresp == 0 && j < 10);
+        } while (cardp->bootcmdresp == 0 && i < 5);
+
+        if (cardp->bootcmdresp <= 0) {
+                if (--reset_count >= 0) {
+                        if_usb_reset_device(cardp);
+                        goto restart;
+                }
+                return -1;
+        }
+
+        i = 0;
+
+        cardp->totalbytes = 0;
+        cardp->fwlastblksent = 0;
+        cardp->CRC_OK = 1;
+        cardp->fwdnldover = 0;
+        cardp->fwseqnum = -1;
+        cardp->totalbytes = 0;
+        cardp->fwfinalblk = 0;
+
+        /* Send the first firmware packet... */
+        if_usb_send_fw_pkt(cardp);
+
+        /* ... and wait for the process to complete */
+        wait_event_interruptible(cardp->fw_wq, cardp->priv->surpriseremoved ||
+                                               cardp->fwdnldover);
+
+        del_timer_sync(&cardp->fw_timeout);
+        usb_kill_urb(cardp->rx_urb);
+
+        if (!cardp->fwdnldover) {
+                printk(KERN_INFO "libertastf: failed to load fw,"
+                                 " resetting device!\n");
+                if (--reset_count >= 0) {
+                        if_usb_reset_device(cardp);
+                        goto restart;
+                }
+
+                printk(KERN_INFO "libertastf: fw download failure\n");
+                ret = -1;
+                goto release_fw;
+        }
+
+        cardp->priv->fw_ready = 1;
+
+ release_fw:
+        release_firmware(cardp->fw);
+        cardp->fw = NULL;
+
+        if_usb_setup_firmware(cardp->priv);
+
+ done:
+        return ret;
+}
+EXPORT_SYMBOL_GPL(if_usb_prog_firmware);
+
+
+#define if_usb_suspend NULL
+#define if_usb_resume NULL
+
+static struct usb_driver if_usb_driver = {
+        .name = DRV_NAME,
+        .probe = if_usb_probe,
+        .disconnect = if_usb_disconnect,
+        .id_table = if_usb_table,
+        .suspend = if_usb_suspend,
+        .resume = if_usb_resume,
+};
+
+static int __init if_usb_init_module(void)
+{
+        int ret = 0;
+
+        ret = usb_register(&if_usb_driver);
+        return ret;
+}
+
+static void __exit if_usb_exit_module(void)
+{
+        usb_deregister(&if_usb_driver);
+}
+
+module_init(if_usb_init_module);
+module_exit(if_usb_exit_module);
+
+MODULE_DESCRIPTION("8388 USB WLAN Thinfirm Driver");
+MODULE_AUTHOR("Cozybit Inc.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/wireless/libertas_tf/if_usb.h b/drivers/net/wireless/libertas_tf/if_usb.h
new file mode 100644
index 000000000000..6fa5b3f59efe
--- /dev/null
+++ b/drivers/net/wireless/libertas_tf/if_usb.h
@@ -0,0 +1,98 @@
+/*
+ *  Copyright (C) 2008, cozybit Inc.
+ *  Copyright (C) 2003-2006, Marvell International Ltd.
+ *
+ *  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.
+ */
+#include <linux/wait.h>
+#include <linux/timer.h>
+
+struct lbtf_private;
+
+/**
+  * This file contains definition for USB interface.
+  */
+#define CMD_TYPE_REQUEST                0xF00DFACE
+#define CMD_TYPE_DATA                   0xBEADC0DE
+#define CMD_TYPE_INDICATION             0xBEEFFACE
+
+#define BOOT_CMD_FW_BY_USB              0x01
+#define BOOT_CMD_FW_IN_EEPROM           0x02
+#define BOOT_CMD_UPDATE_BOOT2           0x03
+#define BOOT_CMD_UPDATE_FW              0x04
+#define BOOT_CMD_MAGIC_NUMBER           0x4C56524D   /* LVRM */
+
+struct bootcmd {
+        __le32  magic;
+        uint8_t cmd;
+        uint8_t pad[11];
+};
+
+#define BOOT_CMD_RESP_OK                0x0001
+#define BOOT_CMD_RESP_FAIL              0x0000
+
+struct bootcmdresp {
+        __le32  magic;
+        uint8_t cmd;
+        uint8_t result;
+        uint8_t pad[2];
+};
+
+/** USB card description structure*/
+struct if_usb_card {
+        struct usb_device *udev;
+        struct urb *rx_urb, *tx_urb, *cmd_urb;
+        struct lbtf_private *priv;
+
+        struct sk_buff *rx_skb;
+
+        uint8_t ep_in;
+        uint8_t ep_out;
+
+        int8_t bootcmdresp;
+
+        int ep_in_size;
+
+        void *ep_out_buf;
+        int ep_out_size;
+
+        const struct firmware *fw;
+        struct timer_list fw_timeout;
+        wait_queue_head_t fw_wq;
+        uint32_t fwseqnum;
+        uint32_t totalbytes;
+        uint32_t fwlastblksent;
+        uint8_t CRC_OK;
+        uint8_t fwdnldover;
+        uint8_t fwfinalblk;
+
+        __le16 boot2_version;
+};
+
+/** fwheader */
+struct fwheader {
+        __le32 dnldcmd;
+        __le32 baseaddr;
+        __le32 datalength;
+        __le32 CRC;
+};
+
+#define FW_MAX_DATA_BLK_SIZE    600
+/** FWData */
+struct fwdata {
+        struct fwheader hdr;
+        __le32 seqnum;
+        uint8_t data[0];
+};
+
+/** fwsyncheader */
+struct fwsyncheader {
+        __le32 cmd;
+        __le32 seqnum;
+};
+
+#define FW_HAS_DATA_TO_RECV             0x00000001
+#define FW_HAS_LAST_BLOCK               0x00000004