rt2800usb.c

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/*
    Copyright (C) 2010 Willow Garage <http://www.willowgarage.com>
    Copyright (C) 2009 - 2010 Ivo van Doorn <[email protected]>
    Copyright (C) 2009 Mattias Nissler <[email protected]>
    Copyright (C) 2009 Felix Fietkau <[email protected]>
    Copyright (C) 2009 Xose Vazquez Perez <[email protected]>
    Copyright (C) 2009 Axel Kollhofer <[email protected]>
    <http://rt2x00.serialmonkey.com>

    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.
 */

/*
    Module: rt2800usb
    Abstract: rt2800usb device specific routines.
    Supported chipsets: RT2800U.
 */

#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>

#include "rt2x00.h"
#include "rt2x00usb.h"
#include "rt2800lib.h"
#include "rt2800.h"
#include "rt2800usb.h"

/*
 * Allow hardware encryption to be disabled.
 */
static bool modparam_nohwcrypt;
module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");

static bool rt2800usb_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev)
{
    return modparam_nohwcrypt;
}

/*
 * Queue handlers.
 */
static void rt2800usb_start_queue(struct data_queue *queue)
{
    struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
    u32 reg;

    switch (queue->qid) {
    case QID_RX:
        rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
        rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 1);
        rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
        break;
    case QID_BEACON:
        rt2x00usb_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
        rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 1);
        rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 1);
        rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 1);
        rt2x00usb_register_write(rt2x00dev, BCN_TIME_CFG, reg);
        break;
    default:
        break;
    }
}

static void rt2800usb_stop_queue(struct data_queue *queue)
{
    struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
    u32 reg;

    switch (queue->qid) {
    case QID_RX:
        rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
        rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 0);
        rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
        break;
    case QID_BEACON:
        rt2x00usb_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
        rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 0);
        rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 0);
        rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 0);
        rt2x00usb_register_write(rt2x00dev, BCN_TIME_CFG, reg);
        break;
    default:
        break;
    }
}

/*
 * test if there is an entry in any TX queue for which DMA is done
 * but the TX status has not been returned yet
 */
static bool rt2800usb_txstatus_pending(struct rt2x00_dev *rt2x00dev)
{
    struct data_queue *queue;

    tx_queue_for_each(rt2x00dev, queue) {
        if (rt2x00queue_get_entry(queue, Q_INDEX_DMA_DONE) !=
            rt2x00queue_get_entry(queue, Q_INDEX_DONE))
            return true;
    }
    return false;
}

static inline bool rt2800usb_entry_txstatus_timeout(struct queue_entry *entry)
{
    bool tout;

    if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
        return false;

    tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(100));
    if (unlikely(tout))
        WARNING(entry->queue->rt2x00dev,
            "TX status timeout for entry %d in queue %d\n",
            entry->entry_idx, entry->queue->qid);
    return tout;

}

static bool rt2800usb_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
{
    struct data_queue *queue;
    struct queue_entry *entry;

    tx_queue_for_each(rt2x00dev, queue) {
        entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
        if (rt2800usb_entry_txstatus_timeout(entry))
            return true;
    }
    return false;
}

static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
                         int urb_status, u32 tx_status)
{
    bool valid;

    if (urb_status) {
        WARNING(rt2x00dev, "TX status read failed %d\n", urb_status);

        goto stop_reading;
    }

    valid = rt2x00_get_field32(tx_status, TX_STA_FIFO_VALID);
    if (valid) {
        if (!kfifo_put(&rt2x00dev->txstatus_fifo, &tx_status))
            WARNING(rt2x00dev, "TX status FIFO overrun\n");

        queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);

        /* Reschedule urb to read TX status again instantly */
        return true;
    }

    /* Check if there is any entry that timedout waiting on TX status */
    if (rt2800usb_txstatus_timeout(rt2x00dev))
        queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);

    if (rt2800usb_txstatus_pending(rt2x00dev)) {
        /* Read register after 250 us */
        hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 250000),
                  HRTIMER_MODE_REL);
        return false;
    }

stop_reading:
    clear_bit(TX_STATUS_READING, &rt2x00dev->flags);
    /*
     * There is small race window above, between txstatus pending check and
     * clear_bit someone could do rt2x00usb_interrupt_txdone, so recheck
     * here again if status reading is needed.
     */
    if (rt2800usb_txstatus_pending(rt2x00dev) &&
        !test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags))
        return true;
    else
        return false;
}

static void rt2800usb_async_read_tx_status(struct rt2x00_dev *rt2x00dev)
{

    if (test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags))
        return;

    /* Read TX_STA_FIFO register after 500 us */
    hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 500000),
              HRTIMER_MODE_REL);
}

static void rt2800usb_tx_dma_done(struct queue_entry *entry)
{
    struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;

    rt2800usb_async_read_tx_status(rt2x00dev);
}

static enum hrtimer_restart rt2800usb_tx_sta_fifo_timeout(struct hrtimer *timer)
{
    struct rt2x00_dev *rt2x00dev =
        container_of(timer, struct rt2x00_dev, txstatus_timer);

    rt2x00usb_register_read_async(rt2x00dev, TX_STA_FIFO,
                      rt2800usb_tx_sta_fifo_read_completed);

    return HRTIMER_NORESTART;
}

/*
 * Firmware functions
 */
static char *rt2800usb_get_firmware_name(struct rt2x00_dev *rt2x00dev)
{
    return FIRMWARE_RT2870;
}

static int rt2800usb_write_firmware(struct rt2x00_dev *rt2x00dev,
                    const u8 *data, const size_t len)
{
    int status;
    u32 offset;
    u32 length;

    /*
     * Check which section of the firmware we need.
     */
    if (rt2x00_rt(rt2x00dev, RT2860) ||
        rt2x00_rt(rt2x00dev, RT2872) ||
        rt2x00_rt(rt2x00dev, RT3070)) {
        offset = 0;
        length = 4096;
    } else {
        offset = 4096;
        length = 4096;
    }

    /*
     * Write firmware to device.
     */
    rt2x00usb_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
                      data + offset, length);

    rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
    rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);

    /*
     * Send firmware request to device to load firmware,
     * we need to specify a long timeout time.
     */
    status = rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE,
                         0, USB_MODE_FIRMWARE,
                         REGISTER_TIMEOUT_FIRMWARE);
    if (status < 0) {
        ERROR(rt2x00dev, "Failed to write Firmware to device.\n");
        return status;
    }

    msleep(10);
    rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);

    return 0;
}

/*
 * Device state switch handlers.
 */
static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
{
    u32 reg;

    /*
     * Wait until BBP and RF are ready.
     */
    if (rt2800_wait_csr_ready(rt2x00dev))
        return -EBUSY;

    rt2x00usb_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
    rt2x00usb_register_write(rt2x00dev, PBF_SYS_CTRL, reg & ~0x00002000);

    reg = 0;
    rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_CSR, 1);
    rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_BBP, 1);
    rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);

    rt2x00usb_register_write(rt2x00dev, USB_DMA_CFG, 0x00000000);

    rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0,
                    USB_MODE_RESET, REGISTER_TIMEOUT);

    rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, 0x00000000);

    return 0;
}

static int rt2800usb_enable_radio(struct rt2x00_dev *rt2x00dev)
{
    u32 reg;

    if (unlikely(rt2800_wait_wpdma_ready(rt2x00dev)))
        return -EIO;

    rt2x00usb_register_read(rt2x00dev, USB_DMA_CFG, &reg);
    rt2x00_set_field32(&reg, USB_DMA_CFG_PHY_CLEAR, 0);
    rt2x00_set_field32(&reg, USB_DMA_CFG_RX_BULK_AGG_EN, 0);
    rt2x00_set_field32(&reg, USB_DMA_CFG_RX_BULK_AGG_TIMEOUT, 128);
    /*
     * Total room for RX frames in kilobytes, PBF might still exceed
     * this limit so reduce the number to prevent errors.
     */
    rt2x00_set_field32(&reg, USB_DMA_CFG_RX_BULK_AGG_LIMIT,
               ((rt2x00dev->ops->rx->entry_num * DATA_FRAME_SIZE)
                / 1024) - 3);
    rt2x00_set_field32(&reg, USB_DMA_CFG_RX_BULK_EN, 1);
    rt2x00_set_field32(&reg, USB_DMA_CFG_TX_BULK_EN, 1);
    rt2x00usb_register_write(rt2x00dev, USB_DMA_CFG, reg);

    return rt2800_enable_radio(rt2x00dev);
}

static void rt2800usb_disable_radio(struct rt2x00_dev *rt2x00dev)
{
    rt2800_disable_radio(rt2x00dev);
    rt2x00usb_disable_radio(rt2x00dev);
}

static int rt2800usb_set_state(struct rt2x00_dev *rt2x00dev,
                   enum dev_state state)
{
    if (state == STATE_AWAKE)
        rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, 0xff, 0, 2);
    else
        rt2800_mcu_request(rt2x00dev, MCU_SLEEP, 0xff, 0xff, 2);

    return 0;
}

static int rt2800usb_set_device_state(struct rt2x00_dev *rt2x00dev,
                      enum dev_state state)
{
    int retval = 0;

    switch (state) {
    case STATE_RADIO_ON:
        /*
         * Before the radio can be enabled, the device first has
         * to be woken up. After that it needs a bit of time
         * to be fully awake and then the radio can be enabled.
         */
        rt2800usb_set_state(rt2x00dev, STATE_AWAKE);
        msleep(1);
        retval = rt2800usb_enable_radio(rt2x00dev);
        break;
    case STATE_RADIO_OFF:
        /*
         * After the radio has been disabled, the device should
         * be put to sleep for powersaving.
         */
        rt2800usb_disable_radio(rt2x00dev);
        rt2800usb_set_state(rt2x00dev, STATE_SLEEP);
        break;
    case STATE_RADIO_IRQ_ON:
    case STATE_RADIO_IRQ_OFF:
        /* No support, but no error either */
        break;
    case STATE_DEEP_SLEEP:
    case STATE_SLEEP:
    case STATE_STANDBY:
    case STATE_AWAKE:
        retval = rt2800usb_set_state(rt2x00dev, state);
        break;
    default:
        retval = -ENOTSUPP;
        break;
    }

    if (unlikely(retval))
        ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
              state, retval);

    return retval;
}

/*
 * Watchdog handlers
 */
static void rt2800usb_watchdog(struct rt2x00_dev *rt2x00dev)
{
    unsigned int i;
    u32 reg;

    rt2x00usb_register_read(rt2x00dev, TXRXQ_PCNT, &reg);
    if (rt2x00_get_field32(reg, TXRXQ_PCNT_TX0Q)) {
        WARNING(rt2x00dev, "TX HW queue 0 timed out,"
            " invoke forced kick\n");

        rt2x00usb_register_write(rt2x00dev, PBF_CFG, 0xf40012);

        for (i = 0; i < 10; i++) {
            udelay(10);
            if (!rt2x00_get_field32(reg, TXRXQ_PCNT_TX0Q))
                break;
        }

        rt2x00usb_register_write(rt2x00dev, PBF_CFG, 0xf40006);
    }

    rt2x00usb_register_read(rt2x00dev, TXRXQ_PCNT, &reg);
    if (rt2x00_get_field32(reg, TXRXQ_PCNT_TX1Q)) {
        WARNING(rt2x00dev, "TX HW queue 1 timed out,"
            " invoke forced kick\n");

        rt2x00usb_register_write(rt2x00dev, PBF_CFG, 0xf4000a);

        for (i = 0; i < 10; i++) {
            udelay(10);
            if (!rt2x00_get_field32(reg, TXRXQ_PCNT_TX1Q))
                break;
        }

        rt2x00usb_register_write(rt2x00dev, PBF_CFG, 0xf40006);
    }

    rt2x00usb_watchdog(rt2x00dev);
}

/*
 * TX descriptor initialization
 */
static __le32 *rt2800usb_get_txwi(struct queue_entry *entry)
{
    if (entry->queue->qid == QID_BEACON)
        return (__le32 *) (entry->skb->data);
    else
        return (__le32 *) (entry->skb->data + TXINFO_DESC_SIZE);
}

static void rt2800usb_write_tx_desc(struct queue_entry *entry,
                    struct txentry_desc *txdesc)
{
    struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
    __le32 *txi = (__le32 *) entry->skb->data;
    u32 word;

    /*
     * Initialize TXINFO descriptor
     */
    rt2x00_desc_read(txi, 0, &word);

    /*
     * The size of TXINFO_W0_USB_DMA_TX_PKT_LEN is
     * TXWI + 802.11 header + L2 pad + payload + pad,
     * so need to decrease size of TXINFO.
     */
    rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_TX_PKT_LEN,
               roundup(entry->skb->len, 4) - TXINFO_DESC_SIZE);
    rt2x00_set_field32(&word, TXINFO_W0_WIV,
               !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags));
    rt2x00_set_field32(&word, TXINFO_W0_QSEL, 2);
    rt2x00_set_field32(&word, TXINFO_W0_SW_USE_LAST_ROUND, 0);
    rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_NEXT_VALID, 0);
    rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_TX_BURST,
               test_bit(ENTRY_TXD_BURST, &txdesc->flags));
    rt2x00_desc_write(txi, 0, word);

    /*
     * Register descriptor details in skb frame descriptor.
     */
    skbdesc->flags |= SKBDESC_DESC_IN_SKB;
    skbdesc->desc = txi;
    skbdesc->desc_len = TXINFO_DESC_SIZE + TXWI_DESC_SIZE;
}

/*
 * TX data initialization
 */
static int rt2800usb_get_tx_data_len(struct queue_entry *entry)
{
    /*
     * pad(1~3 bytes) is needed after each 802.11 payload.
     * USB end pad(4 bytes) is needed at each USB bulk out packet end.
     * TX frame format is :
     * | TXINFO | TXWI | 802.11 header | L2 pad | payload | pad | USB end pad |
     *                 |<------------- tx_pkt_len ------------->|
     */

    return roundup(entry->skb->len, 4) + 4;
}

/*
 * TX control handlers
 */
static enum txdone_entry_desc_flags
rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
{
    __le32 *txwi;
    u32 word;
    int wcid, ack, pid;
    int tx_wcid, tx_ack, tx_pid, is_agg;

    /*
     * This frames has returned with an IO error,
     * so the status report is not intended for this
     * frame.
     */
    if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
        return TXDONE_FAILURE;

    wcid    = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
    ack = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
    pid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
    is_agg  = rt2x00_get_field32(reg, TX_STA_FIFO_TX_AGGRE);

    /*
     * Validate if this TX status report is intended for
     * this entry by comparing the WCID/ACK/PID fields.
     */
    txwi = rt2800usb_get_txwi(entry);

    rt2x00_desc_read(txwi, 1, &word);
    tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
    tx_ack  = rt2x00_get_field32(word, TXWI_W1_ACK);
    tx_pid  = rt2x00_get_field32(word, TXWI_W1_PACKETID);

    if (wcid != tx_wcid || ack != tx_ack || (!is_agg && pid != tx_pid)) {
        WARNING(entry->queue->rt2x00dev,
            "TX status report missed for queue %d entry %d\n",
            entry->queue->qid, entry->entry_idx);
        return TXDONE_UNKNOWN;
    }

    return TXDONE_SUCCESS;
}

static void rt2800usb_txdone(struct rt2x00_dev *rt2x00dev)
{
    struct data_queue *queue;
    struct queue_entry *entry;
    u32 reg;
    u8 qid;
    enum txdone_entry_desc_flags done_status;

    while (kfifo_get(&rt2x00dev->txstatus_fifo, &reg)) {
        /*
         * TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
         * guaranteed to be one of the TX QIDs .
         */
        qid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_QUEUE);
        queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);

        if (unlikely(rt2x00queue_empty(queue))) {
            WARNING(rt2x00dev, "Got TX status for an empty "
                       "queue %u, dropping\n", qid);
            break;
        }

        entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);

        if (unlikely(test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
                 !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))) {
            WARNING(rt2x00dev, "Data pending for entry %u "
                       "in queue %u\n", entry->entry_idx, qid);
            break;
        }

        done_status = rt2800usb_txdone_entry_check(entry, reg);
        if (likely(done_status == TXDONE_SUCCESS))
            rt2800_txdone_entry(entry, reg, rt2800usb_get_txwi(entry));
        else
            rt2x00lib_txdone_noinfo(entry, done_status);
    }
}

static void rt2800usb_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
{
    struct data_queue *queue;
    struct queue_entry *entry;

    /*
     * Process any trailing TX status reports for IO failures,
     * we loop until we find the first non-IO error entry. This
     * can either be a frame which is free, is being uploaded,
     * or has completed the upload but didn't have an entry
     * in the TX_STAT_FIFO register yet.
     */
    tx_queue_for_each(rt2x00dev, queue) {
        while (!rt2x00queue_empty(queue)) {
            entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);

            if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
                !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
                break;

            if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
                rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
            else if (rt2800usb_entry_txstatus_timeout(entry))
                rt2x00lib_txdone_noinfo(entry, TXDONE_UNKNOWN);
            else
                break;
        }
    }
}

static void rt2800usb_work_txdone(struct work_struct *work)
{
    struct rt2x00_dev *rt2x00dev =
        container_of(work, struct rt2x00_dev, txdone_work);

    while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo) ||
           rt2800usb_txstatus_timeout(rt2x00dev)) {

        rt2800usb_txdone(rt2x00dev);

        rt2800usb_txdone_nostatus(rt2x00dev);

        /*
         * The hw may delay sending the packet after DMA complete
         * if the medium is busy, thus the TX_STA_FIFO entry is
         * also delayed -> use a timer to retrieve it.
         */
        if (rt2800usb_txstatus_pending(rt2x00dev))
            rt2800usb_async_read_tx_status(rt2x00dev);
    }
}

/*
 * RX control handlers
 */
static void rt2800usb_fill_rxdone(struct queue_entry *entry,
                  struct rxdone_entry_desc *rxdesc)
{
    struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
    __le32 *rxi = (__le32 *)entry->skb->data;
    __le32 *rxd;
    u32 word;
    int rx_pkt_len;

    /*
     * Copy descriptor to the skbdesc->desc buffer, making it safe from
     * moving of frame data in rt2x00usb.
     */
    memcpy(skbdesc->desc, rxi, skbdesc->desc_len);

    /*
     * RX frame format is :
     * | RXINFO | RXWI | header | L2 pad | payload | pad | RXD | USB pad |
     *          |<------------ rx_pkt_len -------------->|
     */
    rt2x00_desc_read(rxi, 0, &word);
    rx_pkt_len = rt2x00_get_field32(word, RXINFO_W0_USB_DMA_RX_PKT_LEN);

    /*
     * Remove the RXINFO structure from the sbk.
     */
    skb_pull(entry->skb, RXINFO_DESC_SIZE);

    /*
     * Check for rx_pkt_len validity. Return if invalid, leaving
     * rxdesc->size zeroed out by the upper level.
     */
    if (unlikely(rx_pkt_len == 0 ||
            rx_pkt_len > entry->queue->data_size)) {
        ERROR(entry->queue->rt2x00dev,
            "Bad frame size %d, forcing to 0\n", rx_pkt_len);
        return;
    }

    rxd = (__le32 *)(entry->skb->data + rx_pkt_len);

    /*
     * It is now safe to read the descriptor on all architectures.
     */
    rt2x00_desc_read(rxd, 0, &word);

    if (rt2x00_get_field32(word, RXD_W0_CRC_ERROR))
        rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;

    rxdesc->cipher_status = rt2x00_get_field32(word, RXD_W0_CIPHER_ERROR);

    if (rt2x00_get_field32(word, RXD_W0_DECRYPTED)) {
        /*
         * Hardware has stripped IV/EIV data from 802.11 frame during
         * decryption. Unfortunately the descriptor doesn't contain
         * any fields with the EIV/IV data either, so they can't
         * be restored by rt2x00lib.
         */
        rxdesc->flags |= RX_FLAG_IV_STRIPPED;

        /*
         * The hardware has already checked the Michael Mic and has
         * stripped it from the frame. Signal this to mac80211.
         */
        rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;

        if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
            rxdesc->flags |= RX_FLAG_DECRYPTED;
        else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
            rxdesc->flags |= RX_FLAG_MMIC_ERROR;
    }

    if (rt2x00_get_field32(word, RXD_W0_MY_BSS))
        rxdesc->dev_flags |= RXDONE_MY_BSS;

    if (rt2x00_get_field32(word, RXD_W0_L2PAD))
        rxdesc->dev_flags |= RXDONE_L2PAD;

    /*
     * Remove RXD descriptor from end of buffer.
     */
    skb_trim(entry->skb, rx_pkt_len);

    /*
     * Process the RXWI structure.
     */
    rt2800_process_rxwi(entry, rxdesc);
}

/*
 * Device probe functions.
 */
static void rt2800usb_read_eeprom(struct rt2x00_dev *rt2x00dev)
{
    if (rt2800_efuse_detect(rt2x00dev))
        rt2800_read_eeprom_efuse(rt2x00dev);
    else
        rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom,
                      EEPROM_SIZE);
}

static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
{
    int retval;

    retval = rt2800_probe_hw(rt2x00dev);
    if (retval)
        return retval;

    /*
     * Set txstatus timer function.
     */
    rt2x00dev->txstatus_timer.function = rt2800usb_tx_sta_fifo_timeout;

    /*
     * Overwrite TX done handler
     */
    PREPARE_WORK(&rt2x00dev->txdone_work, rt2800usb_work_txdone);

    return 0;
}

static const struct ieee80211_ops rt2800usb_mac80211_ops = {
    .tx         = rt2x00mac_tx,
    .start          = rt2x00mac_start,
    .stop           = rt2x00mac_stop,
    .add_interface      = rt2x00mac_add_interface,
    .remove_interface   = rt2x00mac_remove_interface,
    .config         = rt2x00mac_config,
    .configure_filter   = rt2x00mac_configure_filter,
    .set_tim        = rt2x00mac_set_tim,
    .set_key        = rt2x00mac_set_key,
    .sw_scan_start      = rt2x00mac_sw_scan_start,
    .sw_scan_complete   = rt2x00mac_sw_scan_complete,
    .get_stats      = rt2x00mac_get_stats,
    .get_tkip_seq       = rt2800_get_tkip_seq,
    .set_rts_threshold  = rt2800_set_rts_threshold,
    .sta_add        = rt2x00mac_sta_add,
    .sta_remove     = rt2x00mac_sta_remove,
    .bss_info_changed   = rt2x00mac_bss_info_changed,
    .conf_tx        = rt2800_conf_tx,
    .get_tsf        = rt2800_get_tsf,
    .rfkill_poll        = rt2x00mac_rfkill_poll,
    .ampdu_action       = rt2800_ampdu_action,
    .flush          = rt2x00mac_flush,
    .get_survey     = rt2800_get_survey,
    .get_ringparam      = rt2x00mac_get_ringparam,
    .tx_frames_pending  = rt2x00mac_tx_frames_pending,
};

static const struct rt2800_ops rt2800usb_rt2800_ops = {
    .register_read      = rt2x00usb_register_read,
    .register_read_lock = rt2x00usb_register_read_lock,
    .register_write     = rt2x00usb_register_write,
    .register_write_lock    = rt2x00usb_register_write_lock,
    .register_multiread = rt2x00usb_register_multiread,
    .register_multiwrite    = rt2x00usb_register_multiwrite,
    .regbusy_read       = rt2x00usb_regbusy_read,
    .read_eeprom        = rt2800usb_read_eeprom,
    .hwcrypt_disabled   = rt2800usb_hwcrypt_disabled,
    .drv_write_firmware = rt2800usb_write_firmware,
    .drv_init_registers = rt2800usb_init_registers,
    .drv_get_txwi       = rt2800usb_get_txwi,
};

static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
    .probe_hw       = rt2800usb_probe_hw,
    .get_firmware_name  = rt2800usb_get_firmware_name,
    .check_firmware     = rt2800_check_firmware,
    .load_firmware      = rt2800_load_firmware,
    .initialize     = rt2x00usb_initialize,
    .uninitialize       = rt2x00usb_uninitialize,
    .clear_entry        = rt2x00usb_clear_entry,
    .set_device_state   = rt2800usb_set_device_state,
    .rfkill_poll        = rt2800_rfkill_poll,
    .link_stats     = rt2800_link_stats,
    .reset_tuner        = rt2800_reset_tuner,
    .link_tuner     = rt2800_link_tuner,
    .gain_calibration   = rt2800_gain_calibration,
    .vco_calibration    = rt2800_vco_calibration,
    .watchdog       = rt2800usb_watchdog,
    .start_queue        = rt2800usb_start_queue,
    .kick_queue     = rt2x00usb_kick_queue,
    .stop_queue     = rt2800usb_stop_queue,
    .flush_queue        = rt2x00usb_flush_queue,
    .tx_dma_done        = rt2800usb_tx_dma_done,
    .write_tx_desc      = rt2800usb_write_tx_desc,
    .write_tx_data      = rt2800_write_tx_data,
    .write_beacon       = rt2800_write_beacon,
    .clear_beacon       = rt2800_clear_beacon,
    .get_tx_data_len    = rt2800usb_get_tx_data_len,
    .fill_rxdone        = rt2800usb_fill_rxdone,
    .config_shared_key  = rt2800_config_shared_key,
    .config_pairwise_key    = rt2800_config_pairwise_key,
    .config_filter      = rt2800_config_filter,
    .config_intf        = rt2800_config_intf,
    .config_erp     = rt2800_config_erp,
    .config_ant     = rt2800_config_ant,
    .config         = rt2800_config,
    .sta_add        = rt2800_sta_add,
    .sta_remove     = rt2800_sta_remove,
};

static const struct data_queue_desc rt2800usb_queue_rx = {
    .entry_num      = 128,
    .data_size      = AGGREGATION_SIZE,
    .desc_size      = RXINFO_DESC_SIZE + RXWI_DESC_SIZE,
    .priv_size      = sizeof(struct queue_entry_priv_usb),
};

static const struct data_queue_desc rt2800usb_queue_tx = {
    .entry_num      = 16,
    .data_size      = AGGREGATION_SIZE,
    .desc_size      = TXINFO_DESC_SIZE + TXWI_DESC_SIZE,
    .priv_size      = sizeof(struct queue_entry_priv_usb),
};

static const struct data_queue_desc rt2800usb_queue_bcn = {
    .entry_num      = 8,
    .data_size      = MGMT_FRAME_SIZE,
    .desc_size      = TXINFO_DESC_SIZE + TXWI_DESC_SIZE,
    .priv_size      = sizeof(struct queue_entry_priv_usb),
};

static const struct rt2x00_ops rt2800usb_ops = {
    .name           = KBUILD_MODNAME,
    .drv_data_size      = sizeof(struct rt2800_drv_data),
    .max_ap_intf        = 8,
    .eeprom_size        = EEPROM_SIZE,
    .rf_size        = RF_SIZE,
    .tx_queues      = NUM_TX_QUEUES,
    .extra_tx_headroom  = TXINFO_DESC_SIZE + TXWI_DESC_SIZE,
    .rx         = &rt2800usb_queue_rx,
    .tx         = &rt2800usb_queue_tx,
    .bcn            = &rt2800usb_queue_bcn,
    .lib            = &rt2800usb_rt2x00_ops,
    .drv            = &rt2800usb_rt2800_ops,
    .hw         = &rt2800usb_mac80211_ops,
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
    .debugfs        = &rt2800_rt2x00debug,
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
};

/*
 * rt2800usb module information.
 */
static struct usb_device_id rt2800usb_device_table[] = {
    /* Abocom */
    { USB_DEVICE(0x07b8, 0x2870) },
    { USB_DEVICE(0x07b8, 0x2770) },
    { USB_DEVICE(0x07b8, 0x3070) },
    { USB_DEVICE(0x07b8, 0x3071) },
    { USB_DEVICE(0x07b8, 0x3072) },
    { USB_DEVICE(0x1482, 0x3c09) },
    /* AirTies */
    { USB_DEVICE(0x1eda, 0x2012) },
    { USB_DEVICE(0x1eda, 0x2210) },
    { USB_DEVICE(0x1eda, 0x2310) },
    /* Allwin */
    { USB_DEVICE(0x8516, 0x2070) },
    { USB_DEVICE(0x8516, 0x2770) },
    { USB_DEVICE(0x8516, 0x2870) },
    { USB_DEVICE(0x8516, 0x3070) },
    { USB_DEVICE(0x8516, 0x3071) },
    { USB_DEVICE(0x8516, 0x3072) },
    /* Alpha Networks */
    { USB_DEVICE(0x14b2, 0x3c06) },
    { USB_DEVICE(0x14b2, 0x3c07) },
    { USB_DEVICE(0x14b2, 0x3c09) },
    { USB_DEVICE(0x14b2, 0x3c12) },
    { USB_DEVICE(0x14b2, 0x3c23) },
    { USB_DEVICE(0x14b2, 0x3c25) },
    { USB_DEVICE(0x14b2, 0x3c27) },
    { USB_DEVICE(0x14b2, 0x3c28) },
    { USB_DEVICE(0x14b2, 0x3c2c) },
    /* Amit */
    { USB_DEVICE(0x15c5, 0x0008) },
    /* Askey */
    { USB_DEVICE(0x1690, 0x0740) },
    /* ASUS */
    { USB_DEVICE(0x0b05, 0x1731) },
    { USB_DEVICE(0x0b05, 0x1732) },
    { USB_DEVICE(0x0b05, 0x1742) },
    { USB_DEVICE(0x0b05, 0x1784) },
    { USB_DEVICE(0x1761, 0x0b05) },
    /* AzureWave */
    { USB_DEVICE(0x13d3, 0x3247) },
    { USB_DEVICE(0x13d3, 0x3273) },
    { USB_DEVICE(0x13d3, 0x3305) },
    { USB_DEVICE(0x13d3, 0x3307) },
    { USB_DEVICE(0x13d3, 0x3321) },
    /* Belkin */
    { USB_DEVICE(0x050d, 0x8053) },
    { USB_DEVICE(0x050d, 0x805c) },
    { USB_DEVICE(0x050d, 0x815c) },
    { USB_DEVICE(0x050d, 0x825a) },
    { USB_DEVICE(0x050d, 0x825b) },
    { USB_DEVICE(0x050d, 0x935a) },
    { USB_DEVICE(0x050d, 0x935b) },
    /* Buffalo */
    { USB_DEVICE(0x0411, 0x00e8) },
    { USB_DEVICE(0x0411, 0x0158) },
    { USB_DEVICE(0x0411, 0x015d) },
    { USB_DEVICE(0x0411, 0x016f) },
    { USB_DEVICE(0x0411, 0x01a2) },
    { USB_DEVICE(0x0411, 0x01ee) },
    /* Corega */
    { USB_DEVICE(0x07aa, 0x002f) },
    { USB_DEVICE(0x07aa, 0x003c) },
    { USB_DEVICE(0x07aa, 0x003f) },
    { USB_DEVICE(0x18c5, 0x0012) },
    /* D-Link */
    { USB_DEVICE(0x07d1, 0x3c09) },
    { USB_DEVICE(0x07d1, 0x3c0a) },
    { USB_DEVICE(0x07d1, 0x3c0d) },
    { USB_DEVICE(0x07d1, 0x3c0e) },
    { USB_DEVICE(0x07d1, 0x3c0f) },
    { USB_DEVICE(0x07d1, 0x3c11) },
    { USB_DEVICE(0x07d1, 0x3c13) },
    { USB_DEVICE(0x07d1, 0x3c15) },
    { USB_DEVICE(0x07d1, 0x3c16) },
    { USB_DEVICE(0x2001, 0x3c1b) },
    /* Draytek */
    { USB_DEVICE(0x07fa, 0x7712) },
    /* DVICO */
    { USB_DEVICE(0x0fe9, 0xb307) },
    /* Edimax */
    { USB_DEVICE(0x7392, 0x4085) },
    { USB_DEVICE(0x7392, 0x7711) },
    { USB_DEVICE(0x7392, 0x7717) },
    { USB_DEVICE(0x7392, 0x7718) },
    { USB_DEVICE(0x7392, 0x7722) },
    /* Encore */
    { USB_DEVICE(0x203d, 0x1480) },
    { USB_DEVICE(0x203d, 0x14a9) },
    /* EnGenius */
    { USB_DEVICE(0x1740, 0x9701) },
    { USB_DEVICE(0x1740, 0x9702) },
    { USB_DEVICE(0x1740, 0x9703) },
    { USB_DEVICE(0x1740, 0x9705) },
    { USB_DEVICE(0x1740, 0x9706) },
    { USB_DEVICE(0x1740, 0x9707) },
    { USB_DEVICE(0x1740, 0x9708) },
    { USB_DEVICE(0x1740, 0x9709) },
    /* Gemtek */
    { USB_DEVICE(0x15a9, 0x0012) },
    /* Gigabyte */
    { USB_DEVICE(0x1044, 0x800b) },
    { USB_DEVICE(0x1044, 0x800d) },
    /* Hawking */
    { USB_DEVICE(0x0e66, 0x0001) },
    { USB_DEVICE(0x0e66, 0x0003) },
    { USB_DEVICE(0x0e66, 0x0009) },
    { USB_DEVICE(0x0e66, 0x000b) },
    { USB_DEVICE(0x0e66, 0x0013) },
    { USB_DEVICE(0x0e66, 0x0017) },
    { USB_DEVICE(0x0e66, 0x0018) },
    /* I-O DATA */
    { USB_DEVICE(0x04bb, 0x0945) },
    { USB_DEVICE(0x04bb, 0x0947) },
    { USB_DEVICE(0x04bb, 0x0948) },
    /* Linksys */
    { USB_DEVICE(0x13b1, 0x0031) },
    { USB_DEVICE(0x1737, 0x0070) },
    { USB_DEVICE(0x1737, 0x0071) },
    { USB_DEVICE(0x1737, 0x0077) },
    { USB_DEVICE(0x1737, 0x0078) },
    /* Logitec */
    { USB_DEVICE(0x0789, 0x0162) },
    { USB_DEVICE(0x0789, 0x0163) },
    { USB_DEVICE(0x0789, 0x0164) },
    { USB_DEVICE(0x0789, 0x0166) },
    /* Motorola */
    { USB_DEVICE(0x100d, 0x9031) },
    /* MSI */
    { USB_DEVICE(0x0db0, 0x3820) },
    { USB_DEVICE(0x0db0, 0x3821) },
    { USB_DEVICE(0x0db0, 0x3822) },
    { USB_DEVICE(0x0db0, 0x3870) },
    { USB_DEVICE(0x0db0, 0x3871) },
    { USB_DEVICE(0x0db0, 0x6899) },
    { USB_DEVICE(0x0db0, 0x821a) },
    { USB_DEVICE(0x0db0, 0x822a) },
    { USB_DEVICE(0x0db0, 0x822b) },
    { USB_DEVICE(0x0db0, 0x822c) },
    { USB_DEVICE(0x0db0, 0x870a) },
    { USB_DEVICE(0x0db0, 0x871a) },
    { USB_DEVICE(0x0db0, 0x871b) },
    { USB_DEVICE(0x0db0, 0x871c) },
    { USB_DEVICE(0x0db0, 0x899a) },
    /* Ovislink */
    { USB_DEVICE(0x1b75, 0x3071) },
    { USB_DEVICE(0x1b75, 0x3072) },
    /* Para */
    { USB_DEVICE(0x20b8, 0x8888) },
    /* Pegatron */
    { USB_DEVICE(0x1d4d, 0x0002) },
    { USB_DEVICE(0x1d4d, 0x000c) },
    { USB_DEVICE(0x1d4d, 0x000e) },
    { USB_DEVICE(0x1d4d, 0x0011) },
    /* Philips */
    { USB_DEVICE(0x0471, 0x200f) },
    /* Planex */
    { USB_DEVICE(0x2019, 0x5201) },
    { USB_DEVICE(0x2019, 0xab25) },
    { USB_DEVICE(0x2019, 0xed06) },
    /* Quanta */
    { USB_DEVICE(0x1a32, 0x0304) },
    /* Ralink */
    { USB_DEVICE(0x148f, 0x2070) },
    { USB_DEVICE(0x148f, 0x2770) },
    { USB_DEVICE(0x148f, 0x2870) },
    { USB_DEVICE(0x148f, 0x3070) },
    { USB_DEVICE(0x148f, 0x3071) },
    { USB_DEVICE(0x148f, 0x3072) },
    /* Samsung */
    { USB_DEVICE(0x04e8, 0x2018) },
    /* Siemens */
    { USB_DEVICE(0x129b, 0x1828) },
    /* Sitecom */
    { USB_DEVICE(0x0df6, 0x0017) },
    { USB_DEVICE(0x0df6, 0x002b) },
    { USB_DEVICE(0x0df6, 0x002c) },
    { USB_DEVICE(0x0df6, 0x002d) },
    { USB_DEVICE(0x0df6, 0x0039) },
    { USB_DEVICE(0x0df6, 0x003b) },
    { USB_DEVICE(0x0df6, 0x003d) },
    { USB_DEVICE(0x0df6, 0x003e) },
    { USB_DEVICE(0x0df6, 0x003f) },
    { USB_DEVICE(0x0df6, 0x0040) },
    { USB_DEVICE(0x0df6, 0x0042) },
    { USB_DEVICE(0x0df6, 0x0047) },
    { USB_DEVICE(0x0df6, 0x0048) },
    { USB_DEVICE(0x0df6, 0x0051) },
    { USB_DEVICE(0x0df6, 0x005f) },
    { USB_DEVICE(0x0df6, 0x0060) },
    /* SMC */
    { USB_DEVICE(0x083a, 0x6618) },
    { USB_DEVICE(0x083a, 0x7511) },
    { USB_DEVICE(0x083a, 0x7512) },
    { USB_DEVICE(0x083a, 0x7522) },
    { USB_DEVICE(0x083a, 0x8522) },
    { USB_DEVICE(0x083a, 0xa618) },
    { USB_DEVICE(0x083a, 0xa701) },
    { USB_DEVICE(0x083a, 0xa702) },
    { USB_DEVICE(0x083a, 0xa703) },
    { USB_DEVICE(0x083a, 0xb522) },
    /* Sparklan */
    { USB_DEVICE(0x15a9, 0x0006) },
    /* Sweex */
    { USB_DEVICE(0x177f, 0x0153) },
    { USB_DEVICE(0x177f, 0x0302) },
    { USB_DEVICE(0x177f, 0x0313) },
    /* U-Media */
    { USB_DEVICE(0x157e, 0x300e) },
    { USB_DEVICE(0x157e, 0x3013) },
    /* ZCOM */
    { USB_DEVICE(0x0cde, 0x0022) },
    { USB_DEVICE(0x0cde, 0x0025) },
    /* Zinwell */
    { USB_DEVICE(0x5a57, 0x0280) },
    { USB_DEVICE(0x5a57, 0x0282) },
    { USB_DEVICE(0x5a57, 0x0283) },
    { USB_DEVICE(0x5a57, 0x5257) },
    /* Zyxel */
    { USB_DEVICE(0x0586, 0x3416) },
    { USB_DEVICE(0x0586, 0x3418) },
    { USB_DEVICE(0x0586, 0x341e) },
    { USB_DEVICE(0x0586, 0x343e) },
#ifdef CONFIG_RT2800USB_RT33XX
    /* Belkin */
    { USB_DEVICE(0x050d, 0x945b) },
    /* D-Link */
    { USB_DEVICE(0x2001, 0x3c17) },
    /* Panasonic */
    { USB_DEVICE(0x083a, 0xb511) },
    /* Philips */
    { USB_DEVICE(0x0471, 0x20dd) },
    /* Ralink */
    { USB_DEVICE(0x148f, 0x3370) },
    { USB_DEVICE(0x148f, 0x8070) },
    /* Sitecom */
    { USB_DEVICE(0x0df6, 0x0050) },
#endif
#ifdef CONFIG_RT2800USB_RT35XX
    /* Allwin */
    { USB_DEVICE(0x8516, 0x3572) },
    /* Askey */
    { USB_DEVICE(0x1690, 0x0744) },
    { USB_DEVICE(0x1690, 0x0761) },
    { USB_DEVICE(0x1690, 0x0764) },
    /* ASUS */
    { USB_DEVICE(0x0b05, 0x179d) },
    /* Cisco */
    { USB_DEVICE(0x167b, 0x4001) },
    /* EnGenius */
    { USB_DEVICE(0x1740, 0x9801) },
    /* I-O DATA */
    { USB_DEVICE(0x04bb, 0x0944) },
    /* Linksys */
    { USB_DEVICE(0x13b1, 0x002f) },
    { USB_DEVICE(0x1737, 0x0079) },
    /* Ralink */
    { USB_DEVICE(0x148f, 0x3572) },
    /* Sitecom */
    { USB_DEVICE(0x0df6, 0x0041) },
    { USB_DEVICE(0x0df6, 0x0062) },
    { USB_DEVICE(0x0df6, 0x0065) },
    { USB_DEVICE(0x0df6, 0x0066) },
    { USB_DEVICE(0x0df6, 0x0068) },
    /* Toshiba */
    { USB_DEVICE(0x0930, 0x0a07) },
    /* Zinwell */
    { USB_DEVICE(0x5a57, 0x0284) },
#endif
#ifdef CONFIG_RT2800USB_RT53XX
    /* Arcadyan */
    { USB_DEVICE(0x043e, 0x7a12) },
    /* Azurewave */
    { USB_DEVICE(0x13d3, 0x3329) },
    { USB_DEVICE(0x13d3, 0x3365) },
    /* D-Link */
    { USB_DEVICE(0x2001, 0x3c15) },
    { USB_DEVICE(0x2001, 0x3c19) },
    { USB_DEVICE(0x2001, 0x3c1c) },
    { USB_DEVICE(0x2001, 0x3c1d) },
    /* LG innotek */
    { USB_DEVICE(0x043e, 0x7a22) },
    /* Panasonic */
    { USB_DEVICE(0x04da, 0x1801) },
    { USB_DEVICE(0x04da, 0x1800) },
    /* Philips */
    { USB_DEVICE(0x0471, 0x2104) },
    /* Ralink */
    { USB_DEVICE(0x148f, 0x5370) },
    { USB_DEVICE(0x148f, 0x5372) },
    /* Unknown */
    { USB_DEVICE(0x04da, 0x23f6) },
#endif
#ifdef CONFIG_RT2800USB_UNKNOWN
    /*
     * Unclear what kind of devices these are (they aren't supported by the
     * vendor linux driver).
     */
    /* Abocom */
    { USB_DEVICE(0x07b8, 0x3073) },
    { USB_DEVICE(0x07b8, 0x3074) },
    /* Alpha Networks */
    { USB_DEVICE(0x14b2, 0x3c08) },
    { USB_DEVICE(0x14b2, 0x3c11) },
    /* Amigo */
    { USB_DEVICE(0x0e0b, 0x9031) },
    { USB_DEVICE(0x0e0b, 0x9041) },
    /* ASUS */
    { USB_DEVICE(0x0b05, 0x166a) },
    { USB_DEVICE(0x0b05, 0x1760) },
    { USB_DEVICE(0x0b05, 0x1761) },
    { USB_DEVICE(0x0b05, 0x1790) },
    /* AzureWave */
    { USB_DEVICE(0x13d3, 0x3262) },
    { USB_DEVICE(0x13d3, 0x3284) },
    { USB_DEVICE(0x13d3, 0x3322) },
    /* Belkin */
    { USB_DEVICE(0x050d, 0x1003) },
    /* Buffalo */
    { USB_DEVICE(0x0411, 0x012e) },
    { USB_DEVICE(0x0411, 0x0148) },
    { USB_DEVICE(0x0411, 0x0150) },
    /* Corega */
    { USB_DEVICE(0x07aa, 0x0041) },
    { USB_DEVICE(0x07aa, 0x0042) },
    { USB_DEVICE(0x18c5, 0x0008) },
    /* D-Link */
    { USB_DEVICE(0x07d1, 0x3c0b) },
    { USB_DEVICE(0x07d1, 0x3c17) },
    /* Encore */
    { USB_DEVICE(0x203d, 0x14a1) },
    /* Gemtek */
    { USB_DEVICE(0x15a9, 0x0010) },
    /* Gigabyte */
    { USB_DEVICE(0x1044, 0x800c) },
    /* Huawei */
    { USB_DEVICE(0x148f, 0xf101) },
    /* I-O DATA */
    { USB_DEVICE(0x04bb, 0x094b) },
    /* LevelOne */
    { USB_DEVICE(0x1740, 0x0605) },
    { USB_DEVICE(0x1740, 0x0615) },
    /* Logitec */
    { USB_DEVICE(0x0789, 0x0168) },
    { USB_DEVICE(0x0789, 0x0169) },
    /* Motorola */
    { USB_DEVICE(0x100d, 0x9032) },
    /* Pegatron */
    { USB_DEVICE(0x05a6, 0x0101) },
    { USB_DEVICE(0x1d4d, 0x0010) },
    /* Planex */
    { USB_DEVICE(0x2019, 0xab24) },
    /* Qcom */
    { USB_DEVICE(0x18e8, 0x6259) },
    /* RadioShack */
    { USB_DEVICE(0x08b9, 0x1197) },
    /* Sitecom */
    { USB_DEVICE(0x0df6, 0x003c) },
    { USB_DEVICE(0x0df6, 0x004a) },
    { USB_DEVICE(0x0df6, 0x004d) },
    { USB_DEVICE(0x0df6, 0x0053) },
    /* SMC */
    { USB_DEVICE(0x083a, 0xa512) },
    { USB_DEVICE(0x083a, 0xc522) },
    { USB_DEVICE(0x083a, 0xd522) },
    { USB_DEVICE(0x083a, 0xf511) },
    /* Zyxel */
    { USB_DEVICE(0x0586, 0x341a) },
#endif
    { 0, }
};

MODULE_AUTHOR(DRV_PROJECT);
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("Ralink RT2800 USB Wireless LAN driver.");
MODULE_SUPPORTED_DEVICE("Ralink RT2870 USB chipset based cards");
MODULE_DEVICE_TABLE(usb, rt2800usb_device_table);
MODULE_FIRMWARE(FIRMWARE_RT2870);
MODULE_LICENSE("GPL");

static int rt2800usb_probe(struct usb_interface *usb_intf,
               const struct usb_device_id *id)
{
    return rt2x00usb_probe(usb_intf, &rt2800usb_ops);
}

static struct usb_driver rt2800usb_driver = {
    .name       = KBUILD_MODNAME,
    .id_table   = rt2800usb_device_table,
    .probe      = rt2800usb_probe,
    .disconnect = rt2x00usb_disconnect,
    .suspend    = rt2x00usb_suspend,
    .resume     = rt2x00usb_resume,
    .reset_resume   = rt2x00usb_resume,
    .disable_hub_initiated_lpm = 1,
};

module_usb_driver(rt2800usb_driver);