text: /*
  	Copyright (C) 2010 Willow Garage <http://www.willowgarage.com>
  	Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
  	Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
  	Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
  	Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
  	Copyright (C) 2009 Axel Kollhofer <rain_maker@root-forum.org>
  	<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))
  		rt2x00_warn(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;
  }
  
  #define TXSTATUS_READ_INTERVAL 1000000
  
  static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
  						 int urb_status, u32 tx_status)
  {
  	bool valid;
  
  	if (urb_status) {
  		rt2x00_warn(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))
  			rt2x00_warn(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 1 ms */
  		hrtimer_start(&rt2x00dev->txstatus_timer,
  			      ktime_set(0, TXSTATUS_READ_INTERVAL),
  			      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 2 ms */
  	hrtimer_start(&rt2x00dev->txstatus_timer,
  		      ktime_set(0, 2*TXSTATUS_READ_INTERVAL),
  		      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) {
  		rt2x00_err(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->rx->limit * 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))
  		rt2x00_err(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)) {
  		rt2x00_warn(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)) {
  		rt2x00_warn(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 + entry->queue->winfo_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)) {
  		rt2x00_dbg(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))) {
  			rt2x00_warn(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))) {
  			rt2x00_warn(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)) {
  		rt2x00_err(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 int rt2800usb_read_eeprom(struct rt2x00_dev *rt2x00dev)
  {
  	int retval;
  
  	if (rt2800_efuse_detect(rt2x00dev))
  		retval = rt2800_read_eeprom_efuse(rt2x00dev);
  	else
  		retval = rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom,
  					       EEPROM_SIZE);
  
  	return retval;
  }
  
  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 void rt2800usb_queue_init(struct data_queue *queue)
  {
  	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
  	unsigned short txwi_size, rxwi_size;
  
  	rt2800_get_txwi_rxwi_size(rt2x00dev, &txwi_size, &rxwi_size);
  
  	switch (queue->qid) {
  	case QID_RX:
  		queue->limit = 128;
  		queue->data_size = AGGREGATION_SIZE;
  		queue->desc_size = RXINFO_DESC_SIZE;
  		queue->winfo_size = rxwi_size;
  		queue->priv_size = sizeof(struct queue_entry_priv_usb);
  		break;
  
  	case QID_AC_VO:
  	case QID_AC_VI:
  	case QID_AC_BE:
  	case QID_AC_BK:
  		queue->limit = 16;
  		queue->data_size = AGGREGATION_SIZE;
  		queue->desc_size = TXINFO_DESC_SIZE;
  		queue->winfo_size = txwi_size;
  		queue->priv_size = sizeof(struct queue_entry_priv_usb);
  		break;
  
  	case QID_BEACON:
  		queue->limit = 8;
  		queue->data_size = MGMT_FRAME_SIZE;
  		queue->desc_size = TXINFO_DESC_SIZE;
  		queue->winfo_size = txwi_size;
  		queue->priv_size = sizeof(struct queue_entry_priv_usb);
  		break;
  
  	case QID_ATIM:
  		/* fallthrough */
  	default:
  		BUG();
  		break;
  	}
  }
  
  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,
  	.queue_init		= rt2800usb_queue_init,
  	.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) },
  	{ USB_DEVICE(0x0411, 0x01a8) },
  	/* 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(0x07d1, 0x3c17) },
  	{ 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, 0x0164) },
  	{ USB_DEVICE(0x177f, 0x0302) },
  	{ USB_DEVICE(0x177f, 0x0313) },
  	{ USB_DEVICE(0x177f, 0x0323) },
  	{ USB_DEVICE(0x177f, 0x0324) },
  	/* 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, 0x341a) },
  	{ 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) },
  	/* Sweex */
  	{ USB_DEVICE(0x177f, 0x0163) },
  	{ USB_DEVICE(0x177f, 0x0165) },
  #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) },
  	/* Logitec */
  	{ USB_DEVICE(0x0789, 0x0170) },
  	/* 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_RT3573
  	/* AirLive */
  	{ USB_DEVICE(0x1b75, 0x7733) },
  	/* ASUS */
  	{ USB_DEVICE(0x0b05, 0x17bc) },
  	{ USB_DEVICE(0x0b05, 0x17ad) },
  	/* Belkin */
  	{ USB_DEVICE(0x050d, 0x1103) },
  	/* Cameo */
  	{ USB_DEVICE(0x148f, 0xf301) },
  	/* D-Link */
  	{ USB_DEVICE(0x2001, 0x3c1f) },
  	/* Edimax */
  	{ USB_DEVICE(0x7392, 0x7733) },
  	/* Hawking */
  	{ USB_DEVICE(0x0e66, 0x0020) },
  	{ USB_DEVICE(0x0e66, 0x0021) },
  	/* I-O DATA */
  	{ USB_DEVICE(0x04bb, 0x094e) },
  	/* Linksys */
  	{ USB_DEVICE(0x13b1, 0x003b) },
  	/* Logitec */
  	{ USB_DEVICE(0x0789, 0x016b) },
  	/* NETGEAR */
  	{ USB_DEVICE(0x0846, 0x9012) },
  	{ USB_DEVICE(0x0846, 0x9013) },
  	{ USB_DEVICE(0x0846, 0x9019) },
  	/* Planex */
  	{ USB_DEVICE(0x2019, 0xed19) },
  	/* Ralink */
  	{ USB_DEVICE(0x148f, 0x3573) },
  	/* Sitecom */
  	{ USB_DEVICE(0x0df6, 0x0067) },
  	{ USB_DEVICE(0x0df6, 0x006a) },
  	{ USB_DEVICE(0x0df6, 0x006e) },
  	/* ZyXEL */
  	{ USB_DEVICE(0x0586, 0x3421) },
  #endif
  #ifdef CONFIG_RT2800USB_RT53XX
  	/* Arcadyan */
  	{ USB_DEVICE(0x043e, 0x7a12) },
  	{ USB_DEVICE(0x043e, 0x7a32) },
  	/* 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) },
  	{ USB_DEVICE(0x2001, 0x3c1e) },
  	{ USB_DEVICE(0x2001, 0x3c20) },
  	{ USB_DEVICE(0x2001, 0x3c22) },
  	{ USB_DEVICE(0x2001, 0x3c23) },
  	/* LG innotek */
  	{ USB_DEVICE(0x043e, 0x7a22) },
  	{ USB_DEVICE(0x043e, 0x7a42) },
  	/* Panasonic */
  	{ USB_DEVICE(0x04da, 0x1801) },
  	{ USB_DEVICE(0x04da, 0x1800) },
  	{ USB_DEVICE(0x04da, 0x23f6) },
  	/* Philips */
  	{ USB_DEVICE(0x0471, 0x2104) },
  	{ USB_DEVICE(0x0471, 0x2126) },
  	{ USB_DEVICE(0x0471, 0x2180) },
  	{ USB_DEVICE(0x0471, 0x2181) },
  	{ USB_DEVICE(0x0471, 0x2182) },
  	/* Ralink */
  	{ USB_DEVICE(0x148f, 0x5370) },
  	{ USB_DEVICE(0x148f, 0x5372) },
  #endif
  #ifdef CONFIG_RT2800USB_RT55XX
  	/* Arcadyan */
  	{ USB_DEVICE(0x043e, 0x7a32) },
  	/* AVM GmbH */
  	{ USB_DEVICE(0x057c, 0x8501) },
  	/* Buffalo */
  	{ USB_DEVICE(0x0411, 0x0241) },
  	/* D-Link */
  	{ USB_DEVICE(0x2001, 0x3c1a) },
  	{ USB_DEVICE(0x2001, 0x3c21) },
  	/* Proware */
  	{ USB_DEVICE(0x043e, 0x7a13) },
  	/* Ralink */
  	{ USB_DEVICE(0x148f, 0x5572) },
  	/* TRENDnet */
  	{ USB_DEVICE(0x20f4, 0x724a) },
  #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) },
  	{ USB_DEVICE(0x0b05, 0x17a7) },
  	/* AzureWave */
  	{ USB_DEVICE(0x13d3, 0x3262) },
  	{ USB_DEVICE(0x13d3, 0x3284) },
  	{ USB_DEVICE(0x13d3, 0x3322) },
  	{ USB_DEVICE(0x13d3, 0x3340) },
  	{ USB_DEVICE(0x13d3, 0x3399) },
  	{ USB_DEVICE(0x13d3, 0x3400) },
  	{ USB_DEVICE(0x13d3, 0x3401) },
  	/* 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) },
  	/* Encore */
  	{ USB_DEVICE(0x203d, 0x14a1) },
  	/* EnGenius */
  	{ USB_DEVICE(0x1740, 0x0600) },
  	{ USB_DEVICE(0x1740, 0x0602) },
  	/* Gemtek */
  	{ USB_DEVICE(0x15a9, 0x0010) },
  	/* Gigabyte */
  	{ USB_DEVICE(0x1044, 0x800c) },
  	/* Hercules */
  	{ USB_DEVICE(0x06f8, 0xe036) },
  	/* 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) },
  	{ USB_DEVICE(0x2019, 0xab29) },
  	/* 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) },
  	{ USB_DEVICE(0x0df6, 0x0069) },
  	{ USB_DEVICE(0x0df6, 0x006f) },
  	/* SMC */
  	{ USB_DEVICE(0x083a, 0xa512) },
  	{ USB_DEVICE(0x083a, 0xc522) },
  	{ USB_DEVICE(0x083a, 0xd522) },
  	{ USB_DEVICE(0x083a, 0xf511) },
  	/* Sweex */
  	{ USB_DEVICE(0x177f, 0x0254) },
  	/* TP-LINK */
  	{ USB_DEVICE(0xf201, 0x5370) },
  #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);
  