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rt2800usb.c

/*
      Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
      <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/crc-ccitt.h>
#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 "rt2800usb.h"

/*
 * Allow hardware encryption to be disabled.
 */
static int modparam_nohwcrypt = 1;
module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");

/*
 * Register access.
 * All access to the CSR registers will go through the methods
 * rt2x00usb_register_read and rt2x00usb_register_write.
 * BBP and RF register require indirect register access,
 * and use the CSR registers BBPCSR and RFCSR to achieve this.
 * These indirect registers work with busy bits,
 * and we will try maximal REGISTER_BUSY_COUNT times to access
 * the register while taking a REGISTER_BUSY_DELAY us delay
 * between each attampt. When the busy bit is still set at that time,
 * the access attempt is considered to have failed,
 * and we will print an error.
 * The _lock versions must be used if you already hold the csr_mutex
 */
#define WAIT_FOR_BBP(__dev, __reg) \
      rt2x00usb_regbusy_read((__dev), BBP_CSR_CFG, BBP_CSR_CFG_BUSY, (__reg))
#define WAIT_FOR_RFCSR(__dev, __reg) \
      rt2x00usb_regbusy_read((__dev), RF_CSR_CFG, RF_CSR_CFG_BUSY, (__reg))
#define WAIT_FOR_RF(__dev, __reg) \
      rt2x00usb_regbusy_read((__dev), RF_CSR_CFG0, RF_CSR_CFG0_BUSY, (__reg))
#define WAIT_FOR_MCU(__dev, __reg) \
      rt2x00usb_regbusy_read((__dev), H2M_MAILBOX_CSR, \
                         H2M_MAILBOX_CSR_OWNER, (__reg))

static void rt2800usb_bbp_write(struct rt2x00_dev *rt2x00dev,
                        const unsigned int word, const u8 value)
{
      u32 reg;

      mutex_lock(&rt2x00dev->csr_mutex);

      /*
       * Wait until the BBP becomes available, afterwards we
       * can safely write the new data into the register.
       */
      if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
            reg = 0;
            rt2x00_set_field32(&reg, BBP_CSR_CFG_VALUE, value);
            rt2x00_set_field32(&reg, BBP_CSR_CFG_REGNUM, word);
            rt2x00_set_field32(&reg, BBP_CSR_CFG_BUSY, 1);
            rt2x00_set_field32(&reg, BBP_CSR_CFG_READ_CONTROL, 0);

            rt2x00usb_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg);
      }

      mutex_unlock(&rt2x00dev->csr_mutex);
}

static void rt2800usb_bbp_read(struct rt2x00_dev *rt2x00dev,
                         const unsigned int word, u8 *value)
{
      u32 reg;

      mutex_lock(&rt2x00dev->csr_mutex);

      /*
       * Wait until the BBP becomes available, afterwards we
       * can safely write the read request into the register.
       * After the data has been written, we wait until hardware
       * returns the correct value, if at any time the register
       * doesn't become available in time, reg will be 0xffffffff
       * which means we return 0xff to the caller.
       */
      if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
            reg = 0;
            rt2x00_set_field32(&reg, BBP_CSR_CFG_REGNUM, word);
            rt2x00_set_field32(&reg, BBP_CSR_CFG_BUSY, 1);
            rt2x00_set_field32(&reg, BBP_CSR_CFG_READ_CONTROL, 1);

            rt2x00usb_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg);

            WAIT_FOR_BBP(rt2x00dev, &reg);
      }

      *value = rt2x00_get_field32(reg, BBP_CSR_CFG_VALUE);

      mutex_unlock(&rt2x00dev->csr_mutex);
}

static void rt2800usb_rfcsr_write(struct rt2x00_dev *rt2x00dev,
                          const unsigned int word, const u8 value)
{
      u32 reg;

      mutex_lock(&rt2x00dev->csr_mutex);

      /*
       * Wait until the RFCSR becomes available, afterwards we
       * can safely write the new data into the register.
       */
      if (WAIT_FOR_RFCSR(rt2x00dev, &reg)) {
            reg = 0;
            rt2x00_set_field32(&reg, RF_CSR_CFG_DATA, value);
            rt2x00_set_field32(&reg, RF_CSR_CFG_REGNUM, word);
            rt2x00_set_field32(&reg, RF_CSR_CFG_WRITE, 1);
            rt2x00_set_field32(&reg, RF_CSR_CFG_BUSY, 1);

            rt2x00usb_register_write_lock(rt2x00dev, RF_CSR_CFG, reg);
      }

      mutex_unlock(&rt2x00dev->csr_mutex);
}

static void rt2800usb_rfcsr_read(struct rt2x00_dev *rt2x00dev,
                         const unsigned int word, u8 *value)
{
      u32 reg;

      mutex_lock(&rt2x00dev->csr_mutex);

      /*
       * Wait until the RFCSR becomes available, afterwards we
       * can safely write the read request into the register.
       * After the data has been written, we wait until hardware
       * returns the correct value, if at any time the register
       * doesn't become available in time, reg will be 0xffffffff
       * which means we return 0xff to the caller.
       */
      if (WAIT_FOR_RFCSR(rt2x00dev, &reg)) {
            reg = 0;
            rt2x00_set_field32(&reg, RF_CSR_CFG_REGNUM, word);
            rt2x00_set_field32(&reg, RF_CSR_CFG_WRITE, 0);
            rt2x00_set_field32(&reg, RF_CSR_CFG_BUSY, 1);

            rt2x00usb_register_write_lock(rt2x00dev, BBP_CSR_CFG, reg);

            WAIT_FOR_RFCSR(rt2x00dev, &reg);
      }

      *value = rt2x00_get_field32(reg, RF_CSR_CFG_DATA);

      mutex_unlock(&rt2x00dev->csr_mutex);
}

static void rt2800usb_rf_write(struct rt2x00_dev *rt2x00dev,
                         const unsigned int word, const u32 value)
{
      u32 reg;

      mutex_lock(&rt2x00dev->csr_mutex);

      /*
       * Wait until the RF becomes available, afterwards we
       * can safely write the new data into the register.
       */
      if (WAIT_FOR_RF(rt2x00dev, &reg)) {
            reg = 0;
            rt2x00_set_field32(&reg, RF_CSR_CFG0_REG_VALUE_BW, value);
            rt2x00_set_field32(&reg, RF_CSR_CFG0_STANDBYMODE, 0);
            rt2x00_set_field32(&reg, RF_CSR_CFG0_SEL, 0);
            rt2x00_set_field32(&reg, RF_CSR_CFG0_BUSY, 1);

            rt2x00usb_register_write_lock(rt2x00dev, RF_CSR_CFG0, reg);
            rt2x00_rf_write(rt2x00dev, word, value);
      }

      mutex_unlock(&rt2x00dev->csr_mutex);
}

static void rt2800usb_mcu_request(struct rt2x00_dev *rt2x00dev,
                          const u8 command, const u8 token,
                          const u8 arg0, const u8 arg1)
{
      u32 reg;

      mutex_lock(&rt2x00dev->csr_mutex);

      /*
       * Wait until the MCU becomes available, afterwards we
       * can safely write the new data into the register.
       */
      if (WAIT_FOR_MCU(rt2x00dev, &reg)) {
            rt2x00_set_field32(&reg, H2M_MAILBOX_CSR_OWNER, 1);
            rt2x00_set_field32(&reg, H2M_MAILBOX_CSR_CMD_TOKEN, token);
            rt2x00_set_field32(&reg, H2M_MAILBOX_CSR_ARG0, arg0);
            rt2x00_set_field32(&reg, H2M_MAILBOX_CSR_ARG1, arg1);
            rt2x00usb_register_write_lock(rt2x00dev, H2M_MAILBOX_CSR, reg);

            reg = 0;
            rt2x00_set_field32(&reg, HOST_CMD_CSR_HOST_COMMAND, command);
            rt2x00usb_register_write_lock(rt2x00dev, HOST_CMD_CSR, reg);
      }

      mutex_unlock(&rt2x00dev->csr_mutex);
}

#ifdef CONFIG_RT2X00_LIB_DEBUGFS
static const struct rt2x00debug rt2800usb_rt2x00debug = {
      .owner      = THIS_MODULE,
      .csr  = {
            .read       = rt2x00usb_register_read,
            .write            = rt2x00usb_register_write,
            .flags            = RT2X00DEBUGFS_OFFSET,
            .word_base  = CSR_REG_BASE,
            .word_size  = sizeof(u32),
            .word_count = CSR_REG_SIZE / sizeof(u32),
      },
      .eeprom     = {
            .read       = rt2x00_eeprom_read,
            .write            = rt2x00_eeprom_write,
            .word_base  = EEPROM_BASE,
            .word_size  = sizeof(u16),
            .word_count = EEPROM_SIZE / sizeof(u16),
      },
      .bbp  = {
            .read       = rt2800usb_bbp_read,
            .write            = rt2800usb_bbp_write,
            .word_base  = BBP_BASE,
            .word_size  = sizeof(u8),
            .word_count = BBP_SIZE / sizeof(u8),
      },
      .rf   = {
            .read       = rt2x00_rf_read,
            .write            = rt2800usb_rf_write,
            .word_base  = RF_BASE,
            .word_size  = sizeof(u32),
            .word_count = RF_SIZE / sizeof(u32),
      },
};
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */

#ifdef CONFIG_RT2X00_LIB_RFKILL
static int rt2800usb_rfkill_poll(struct rt2x00_dev *rt2x00dev)
{
      u32 reg;

      rt2x00usb_register_read(rt2x00dev, GPIO_CTRL_CFG, &reg);
      return rt2x00_get_field32(reg, GPIO_CTRL_CFG_BIT2);
}
#else
#define rt2800usb_rfkill_poll NULL
#endif /* CONFIG_RT2X00_LIB_RFKILL */

#ifdef CONFIG_RT2X00_LIB_LEDS
static void rt2800usb_brightness_set(struct led_classdev *led_cdev,
                             enum led_brightness brightness)
{
      struct rt2x00_led *led =
          container_of(led_cdev, struct rt2x00_led, led_dev);
      unsigned int enabled = brightness != LED_OFF;
      unsigned int bg_mode =
          (enabled && led->rt2x00dev->curr_band == IEEE80211_BAND_2GHZ);
      unsigned int polarity =
            rt2x00_get_field16(led->rt2x00dev->led_mcu_reg,
                           EEPROM_FREQ_LED_POLARITY);
      unsigned int ledmode =
            rt2x00_get_field16(led->rt2x00dev->led_mcu_reg,
                           EEPROM_FREQ_LED_MODE);

      if (led->type == LED_TYPE_RADIO) {
            rt2800usb_mcu_request(led->rt2x00dev, MCU_LED, 0xff, ledmode,
                              enabled ? 0x20 : 0);
      } else if (led->type == LED_TYPE_ASSOC) {
            rt2800usb_mcu_request(led->rt2x00dev, MCU_LED, 0xff, ledmode,
                              enabled ? (bg_mode ? 0x60 : 0xa0) : 0x20);
      } else if (led->type == LED_TYPE_QUALITY) {
            /*
             * The brightness is divided into 6 levels (0 - 5),
             * The specs tell us the following levels:
             *    0, 1 ,3, 7, 15, 31
             * to determine the level in a simple way we can simply
             * work with bitshifting:
             *    (1 << level) - 1
             */
            rt2800usb_mcu_request(led->rt2x00dev, MCU_LED_STRENGTH, 0xff,
                              (1 << brightness / (LED_FULL / 6)) - 1,
                              polarity);
      }
}

static int rt2800usb_blink_set(struct led_classdev *led_cdev,
                         unsigned long *delay_on,
                         unsigned long *delay_off)
{
      struct rt2x00_led *led =
          container_of(led_cdev, struct rt2x00_led, led_dev);
      u32 reg;

      rt2x00usb_register_read(led->rt2x00dev, LED_CFG, &reg);
      rt2x00_set_field32(&reg, LED_CFG_ON_PERIOD, *delay_on);
      rt2x00_set_field32(&reg, LED_CFG_OFF_PERIOD, *delay_off);
      rt2x00_set_field32(&reg, LED_CFG_SLOW_BLINK_PERIOD, 3);
      rt2x00_set_field32(&reg, LED_CFG_R_LED_MODE, 3);
      rt2x00_set_field32(&reg, LED_CFG_G_LED_MODE, 12);
      rt2x00_set_field32(&reg, LED_CFG_Y_LED_MODE, 3);
      rt2x00_set_field32(&reg, LED_CFG_LED_POLAR, 1);
      rt2x00usb_register_write(led->rt2x00dev, LED_CFG, reg);

      return 0;
}

static void rt2800usb_init_led(struct rt2x00_dev *rt2x00dev,
                         struct rt2x00_led *led,
                         enum led_type type)
{
      led->rt2x00dev = rt2x00dev;
      led->type = type;
      led->led_dev.brightness_set = rt2800usb_brightness_set;
      led->led_dev.blink_set = rt2800usb_blink_set;
      led->flags = LED_INITIALIZED;
}
#endif /* CONFIG_RT2X00_LIB_LEDS */

/*
 * Configuration handlers.
 */
static void rt2800usb_config_wcid_attr(struct rt2x00_dev *rt2x00dev,
                               struct rt2x00lib_crypto *crypto,
                               struct ieee80211_key_conf *key)
{
      struct mac_wcid_entry wcid_entry;
      struct mac_iveiv_entry iveiv_entry;
      u32 offset;
      u32 reg;

      offset = MAC_WCID_ATTR_ENTRY(key->hw_key_idx);

      rt2x00usb_register_read(rt2x00dev, offset, &reg);
      rt2x00_set_field32(&reg, MAC_WCID_ATTRIBUTE_KEYTAB,
                     !!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE));
      rt2x00_set_field32(&reg, MAC_WCID_ATTRIBUTE_CIPHER,
                     (crypto->cmd == SET_KEY) * crypto->cipher);
      rt2x00_set_field32(&reg, MAC_WCID_ATTRIBUTE_BSS_IDX,
                     (crypto->cmd == SET_KEY) * crypto->bssidx);
      rt2x00_set_field32(&reg, MAC_WCID_ATTRIBUTE_RX_WIUDF, crypto->cipher);
      rt2x00usb_register_write(rt2x00dev, offset, reg);

      offset = MAC_IVEIV_ENTRY(key->hw_key_idx);

      memset(&iveiv_entry, 0, sizeof(iveiv_entry));
      if ((crypto->cipher == CIPHER_TKIP) ||
          (crypto->cipher == CIPHER_TKIP_NO_MIC) ||
          (crypto->cipher == CIPHER_AES))
            iveiv_entry.iv[3] |= 0x20;
      iveiv_entry.iv[3] |= key->keyidx << 6;
      rt2x00usb_register_multiwrite(rt2x00dev, offset,
                              &iveiv_entry, sizeof(iveiv_entry));

      offset = MAC_WCID_ENTRY(key->hw_key_idx);

      memset(&wcid_entry, 0, sizeof(wcid_entry));
      if (crypto->cmd == SET_KEY)
            memcpy(&wcid_entry, crypto->address, ETH_ALEN);
      rt2x00usb_register_multiwrite(rt2x00dev, offset,
                              &wcid_entry, sizeof(wcid_entry));
}

static int rt2800usb_config_shared_key(struct rt2x00_dev *rt2x00dev,
                               struct rt2x00lib_crypto *crypto,
                               struct ieee80211_key_conf *key)
{
      struct hw_key_entry key_entry;
      struct rt2x00_field32 field;
      int timeout;
      u32 offset;
      u32 reg;

      if (crypto->cmd == SET_KEY) {
            key->hw_key_idx = (4 * crypto->bssidx) + key->keyidx;

            memcpy(key_entry.key, crypto->key,
                   sizeof(key_entry.key));
            memcpy(key_entry.tx_mic, crypto->tx_mic,
                   sizeof(key_entry.tx_mic));
            memcpy(key_entry.rx_mic, crypto->rx_mic,
                   sizeof(key_entry.rx_mic));

            offset = SHARED_KEY_ENTRY(key->hw_key_idx);
            timeout = REGISTER_TIMEOUT32(sizeof(key_entry));
            rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
                                        USB_VENDOR_REQUEST_OUT,
                                        offset, &key_entry,
                                        sizeof(key_entry),
                                        timeout);
      }

      /*
       * The cipher types are stored over multiple registers
       * starting with SHARED_KEY_MODE_BASE each word will have
       * 32 bits and contains the cipher types for 2 bssidx each.
       * Using the correct defines correctly will cause overhead,
       * so just calculate the correct offset.
       */
      field.bit_offset = 4 * (key->hw_key_idx % 8);
      field.bit_mask = 0x7 << field.bit_offset;

      offset = SHARED_KEY_MODE_ENTRY(key->hw_key_idx / 8);

      rt2x00usb_register_read(rt2x00dev, offset, &reg);
      rt2x00_set_field32(&reg, field,
                     (crypto->cmd == SET_KEY) * crypto->cipher);
      rt2x00usb_register_write(rt2x00dev, offset, reg);

      /*
       * Update WCID information
       */
      rt2800usb_config_wcid_attr(rt2x00dev, crypto, key);

      return 0;
}

static int rt2800usb_config_pairwise_key(struct rt2x00_dev *rt2x00dev,
                               struct rt2x00lib_crypto *crypto,
                               struct ieee80211_key_conf *key)
{
      struct hw_key_entry key_entry;
      int timeout;
      u32 offset;

      if (crypto->cmd == SET_KEY) {
            /*
             * 1 pairwise key is possible per AID, this means that the AID
             * equals our hw_key_idx. Make sure the WCID starts _after_ the
             * last possible shared key entry.
             */
            if (crypto->aid > (256 - 32))
                  return -ENOSPC;

            key->hw_key_idx = 32 + crypto->aid;

            memcpy(key_entry.key, crypto->key,
                   sizeof(key_entry.key));
            memcpy(key_entry.tx_mic, crypto->tx_mic,
                   sizeof(key_entry.tx_mic));
            memcpy(key_entry.rx_mic, crypto->rx_mic,
                   sizeof(key_entry.rx_mic));

            offset = PAIRWISE_KEY_ENTRY(key->hw_key_idx);
            timeout = REGISTER_TIMEOUT32(sizeof(key_entry));
            rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
                                        USB_VENDOR_REQUEST_OUT,
                                        offset, &key_entry,
                                        sizeof(key_entry),
                                        timeout);
      }

      /*
       * Update WCID information
       */
      rt2800usb_config_wcid_attr(rt2x00dev, crypto, key);

      return 0;
}

static void rt2800usb_config_filter(struct rt2x00_dev *rt2x00dev,
                            const unsigned int filter_flags)
{
      u32 reg;

      /*
       * Start configuration steps.
       * Note that the version error will always be dropped
       * and broadcast frames will always be accepted since
       * there is no filter for it at this time.
       */
      rt2x00usb_register_read(rt2x00dev, RX_FILTER_CFG, &reg);
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_CRC_ERROR,
                     !(filter_flags & FIF_FCSFAIL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_PHY_ERROR,
                     !(filter_flags & FIF_PLCPFAIL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_NOT_TO_ME,
                     !(filter_flags & FIF_PROMISC_IN_BSS));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_NOT_MY_BSSD, 0);
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_VER_ERROR, 1);
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_MULTICAST,
                     !(filter_flags & FIF_ALLMULTI));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_BROADCAST, 0);
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_DUPLICATE, 1);
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_CF_END_ACK,
                     !(filter_flags & FIF_CONTROL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_CF_END,
                     !(filter_flags & FIF_CONTROL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_ACK,
                     !(filter_flags & FIF_CONTROL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_CTS,
                     !(filter_flags & FIF_CONTROL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_RTS,
                     !(filter_flags & FIF_CONTROL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_PSPOLL,
                     !(filter_flags & FIF_CONTROL));
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_BA, 1);
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_BAR, 0);
      rt2x00_set_field32(&reg, RX_FILTER_CFG_DROP_CNTL,
                     !(filter_flags & FIF_CONTROL));
      rt2x00usb_register_write(rt2x00dev, RX_FILTER_CFG, reg);
}

static void rt2800usb_config_intf(struct rt2x00_dev *rt2x00dev,
                          struct rt2x00_intf *intf,
                          struct rt2x00intf_conf *conf,
                          const unsigned int flags)
{
      unsigned int beacon_base;
      u32 reg;

      if (flags & CONFIG_UPDATE_TYPE) {
            /*
             * Clear current synchronisation setup.
             * For the Beacon base registers we only need to clear
             * the first byte since that byte contains the VALID and OWNER
             * bits which (when set to 0) will invalidate the entire beacon.
             */
            beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
            rt2x00usb_register_write(rt2x00dev, beacon_base, 0);

            /*
             * Enable synchronisation.
             */
            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_TSF_SYNC, conf->sync);
            rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 1);
            rt2x00usb_register_write(rt2x00dev, BCN_TIME_CFG, reg);
      }

      if (flags & CONFIG_UPDATE_MAC) {
            reg = le32_to_cpu(conf->mac[1]);
            rt2x00_set_field32(&reg, MAC_ADDR_DW1_UNICAST_TO_ME_MASK, 0xff);
            conf->mac[1] = cpu_to_le32(reg);

            rt2x00usb_register_multiwrite(rt2x00dev, MAC_ADDR_DW0,
                                    conf->mac, sizeof(conf->mac));
      }

      if (flags & CONFIG_UPDATE_BSSID) {
            reg = le32_to_cpu(conf->bssid[1]);
            rt2x00_set_field32(&reg, MAC_BSSID_DW1_BSS_ID_MASK, 0);
            rt2x00_set_field32(&reg, MAC_BSSID_DW1_BSS_BCN_NUM, 0);
            conf->bssid[1] = cpu_to_le32(reg);

            rt2x00usb_register_multiwrite(rt2x00dev, MAC_BSSID_DW0,
                                    conf->bssid, sizeof(conf->bssid));
      }
}

static void rt2800usb_config_erp(struct rt2x00_dev *rt2x00dev,
                         struct rt2x00lib_erp *erp)
{
      u32 reg;

      rt2x00usb_register_read(rt2x00dev, TX_TIMEOUT_CFG, &reg);
      rt2x00_set_field32(&reg, TX_TIMEOUT_CFG_RX_ACK_TIMEOUT,
                     DIV_ROUND_UP(erp->ack_timeout, erp->slot_time));
      rt2x00usb_register_write(rt2x00dev, TX_TIMEOUT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, AUTO_RSP_CFG, &reg);
      rt2x00_set_field32(&reg, AUTO_RSP_CFG_BAC_ACK_POLICY,
                     !!erp->short_preamble);
      rt2x00_set_field32(&reg, AUTO_RSP_CFG_AR_PREAMBLE,
                     !!erp->short_preamble);
      rt2x00usb_register_write(rt2x00dev, AUTO_RSP_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, OFDM_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_PROTECT_CTRL,
                     erp->cts_protection ? 2 : 0);
      rt2x00usb_register_write(rt2x00dev, OFDM_PROT_CFG, reg);

      rt2x00usb_register_write(rt2x00dev, LEGACY_BASIC_RATE,
                         erp->basic_rates);
      rt2x00usb_register_write(rt2x00dev, HT_BASIC_RATE, 0x00008003);

      rt2x00usb_register_read(rt2x00dev, BKOFF_SLOT_CFG, &reg);
      rt2x00_set_field32(&reg, BKOFF_SLOT_CFG_SLOT_TIME, erp->slot_time);
      rt2x00_set_field32(&reg, BKOFF_SLOT_CFG_CC_DELAY_TIME, 2);
      rt2x00usb_register_write(rt2x00dev, BKOFF_SLOT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, XIFS_TIME_CFG, &reg);
      rt2x00_set_field32(&reg, XIFS_TIME_CFG_CCKM_SIFS_TIME, erp->sifs);
      rt2x00_set_field32(&reg, XIFS_TIME_CFG_OFDM_SIFS_TIME, erp->sifs);
      rt2x00_set_field32(&reg, XIFS_TIME_CFG_OFDM_XIFS_TIME, 4);
      rt2x00_set_field32(&reg, XIFS_TIME_CFG_EIFS, erp->eifs);
      rt2x00_set_field32(&reg, XIFS_TIME_CFG_BB_RXEND_ENABLE, 1);
      rt2x00usb_register_write(rt2x00dev, XIFS_TIME_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
      rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_INTERVAL,
                     erp->beacon_int * 16);
      rt2x00usb_register_write(rt2x00dev, BCN_TIME_CFG, reg);
}

static void rt2800usb_config_ant(struct rt2x00_dev *rt2x00dev,
                         struct antenna_setup *ant)
{
      u8 r1;
      u8 r3;

      rt2800usb_bbp_read(rt2x00dev, 1, &r1);
      rt2800usb_bbp_read(rt2x00dev, 3, &r3);

      /*
       * Configure the TX antenna.
       */
      switch ((int)ant->tx) {
      case 1:
            rt2x00_set_field8(&r1, BBP1_TX_ANTENNA, 0);
            break;
      case 2:
            rt2x00_set_field8(&r1, BBP1_TX_ANTENNA, 2);
            break;
      case 3:
            /* Do nothing */
            break;
      }

      /*
       * Configure the RX antenna.
       */
      switch ((int)ant->rx) {
      case 1:
            rt2x00_set_field8(&r3, BBP3_RX_ANTENNA, 0);
            break;
      case 2:
            rt2x00_set_field8(&r3, BBP3_RX_ANTENNA, 1);
            break;
      case 3:
            rt2x00_set_field8(&r3, BBP3_RX_ANTENNA, 2);
            break;
      }

      rt2800usb_bbp_write(rt2x00dev, 3, r3);
      rt2800usb_bbp_write(rt2x00dev, 1, r1);
}

static void rt2800usb_config_lna_gain(struct rt2x00_dev *rt2x00dev,
                              struct rt2x00lib_conf *libconf)
{
      u16 eeprom;
      short lna_gain;

      if (libconf->rf.channel <= 14) {
            rt2x00_eeprom_read(rt2x00dev, EEPROM_LNA, &eeprom);
            lna_gain = rt2x00_get_field16(eeprom, EEPROM_LNA_BG);
      } else if (libconf->rf.channel <= 64) {
            rt2x00_eeprom_read(rt2x00dev, EEPROM_LNA, &eeprom);
            lna_gain = rt2x00_get_field16(eeprom, EEPROM_LNA_A0);
      } else if (libconf->rf.channel <= 128) {
            rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_BG2, &eeprom);
            lna_gain = rt2x00_get_field16(eeprom, EEPROM_RSSI_BG2_LNA_A1);
      } else {
            rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_A2, &eeprom);
            lna_gain = rt2x00_get_field16(eeprom, EEPROM_RSSI_A2_LNA_A2);
      }

      rt2x00dev->lna_gain = lna_gain;
}

static void rt2800usb_config_channel_rt2x(struct rt2x00_dev *rt2x00dev,
                                struct ieee80211_conf *conf,
                                struct rf_channel *rf,
                                struct channel_info *info)
{
      rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset);

      if (rt2x00dev->default_ant.tx == 1)
            rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_TX1, 1);

      if (rt2x00dev->default_ant.rx == 1) {
            rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_RX1, 1);
            rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_RX2, 1);
      } else if (rt2x00dev->default_ant.rx == 2)
            rt2x00_set_field32(&rf->rf2, RF2_ANTENNA_RX2, 1);

      if (rf->channel > 14) {
            /*
             * When TX power is below 0, we should increase it by 7 to
             * make it a positive value (Minumum value is -7).
             * However this means that values between 0 and 7 have
             * double meaning, and we should set a 7DBm boost flag.
             */
            rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_A_7DBM_BOOST,
                           (info->tx_power1 >= 0));

            if (info->tx_power1 < 0)
                  info->tx_power1 += 7;

            rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_A,
                           TXPOWER_A_TO_DEV(info->tx_power1));

            rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_A_7DBM_BOOST,
                           (info->tx_power2 >= 0));

            if (info->tx_power2 < 0)
                  info->tx_power2 += 7;

            rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_A,
                           TXPOWER_A_TO_DEV(info->tx_power2));
      } else {
            rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_G,
                           TXPOWER_G_TO_DEV(info->tx_power1));
            rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_G,
                           TXPOWER_G_TO_DEV(info->tx_power2));
      }

      rt2x00_set_field32(&rf->rf4, RF4_HT40, conf_is_ht40(conf));

      rt2800usb_rf_write(rt2x00dev, 1, rf->rf1);
      rt2800usb_rf_write(rt2x00dev, 2, rf->rf2);
      rt2800usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
      rt2800usb_rf_write(rt2x00dev, 4, rf->rf4);

      udelay(200);

      rt2800usb_rf_write(rt2x00dev, 1, rf->rf1);
      rt2800usb_rf_write(rt2x00dev, 2, rf->rf2);
      rt2800usb_rf_write(rt2x00dev, 3, rf->rf3 | 0x00000004);
      rt2800usb_rf_write(rt2x00dev, 4, rf->rf4);

      udelay(200);

      rt2800usb_rf_write(rt2x00dev, 1, rf->rf1);
      rt2800usb_rf_write(rt2x00dev, 2, rf->rf2);
      rt2800usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
      rt2800usb_rf_write(rt2x00dev, 4, rf->rf4);
}

static void rt2800usb_config_channel_rt3x(struct rt2x00_dev *rt2x00dev,
                                struct ieee80211_conf *conf,
                                struct rf_channel *rf,
                                struct channel_info *info)
{
      u8 rfcsr;

      rt2800usb_rfcsr_write(rt2x00dev, 2, rf->rf1);
      rt2800usb_rfcsr_write(rt2x00dev, 2, rf->rf3);

      rt2800usb_rfcsr_read(rt2x00dev, 6, &rfcsr);
      rt2x00_set_field8(&rfcsr, RFCSR6_R, rf->rf2);
      rt2800usb_rfcsr_write(rt2x00dev, 6, rfcsr);

      rt2800usb_rfcsr_read(rt2x00dev, 12, &rfcsr);
      rt2x00_set_field8(&rfcsr, RFCSR12_TX_POWER,
                    TXPOWER_G_TO_DEV(info->tx_power1));
      rt2800usb_rfcsr_write(rt2x00dev, 12, rfcsr);

      rt2800usb_rfcsr_read(rt2x00dev, 23, &rfcsr);
      rt2x00_set_field8(&rfcsr, RFCSR23_FREQ_OFFSET, rt2x00dev->freq_offset);
      rt2800usb_rfcsr_write(rt2x00dev, 23, rfcsr);

      rt2800usb_rfcsr_write(rt2x00dev, 24,
                        rt2x00dev->calibration[conf_is_ht40(conf)]);

      rt2800usb_rfcsr_read(rt2x00dev, 23, &rfcsr);
      rt2x00_set_field8(&rfcsr, RFCSR7_RF_TUNING, 1);
      rt2800usb_rfcsr_write(rt2x00dev, 23, rfcsr);
}

static void rt2800usb_config_channel(struct rt2x00_dev *rt2x00dev,
                             struct ieee80211_conf *conf,
                             struct rf_channel *rf,
                             struct channel_info *info)
{
      u32 reg;
      unsigned int tx_pin;
      u8 bbp;

      if (rt2x00_rev(&rt2x00dev->chip) != RT3070_VERSION)
            rt2800usb_config_channel_rt2x(rt2x00dev, conf, rf, info);
      else
            rt2800usb_config_channel_rt3x(rt2x00dev, conf, rf, info);

      /*
       * Change BBP settings
       */
      rt2800usb_bbp_write(rt2x00dev, 62, 0x37 - rt2x00dev->lna_gain);
      rt2800usb_bbp_write(rt2x00dev, 63, 0x37 - rt2x00dev->lna_gain);
      rt2800usb_bbp_write(rt2x00dev, 64, 0x37 - rt2x00dev->lna_gain);
      rt2800usb_bbp_write(rt2x00dev, 86, 0);

      if (rf->channel <= 14) {
            if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags)) {
                  rt2800usb_bbp_write(rt2x00dev, 82, 0x62);
                  rt2800usb_bbp_write(rt2x00dev, 75, 0x46);
            } else {
                  rt2800usb_bbp_write(rt2x00dev, 82, 0x84);
                  rt2800usb_bbp_write(rt2x00dev, 75, 0x50);
            }
      } else {
            rt2800usb_bbp_write(rt2x00dev, 82, 0xf2);

            if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags))
                  rt2800usb_bbp_write(rt2x00dev, 75, 0x46);
            else
                  rt2800usb_bbp_write(rt2x00dev, 75, 0x50);
      }

      rt2x00usb_register_read(rt2x00dev, TX_BAND_CFG, &reg);
      rt2x00_set_field32(&reg, TX_BAND_CFG_HT40_PLUS, conf_is_ht40_plus(conf));
      rt2x00_set_field32(&reg, TX_BAND_CFG_A, rf->channel > 14);
      rt2x00_set_field32(&reg, TX_BAND_CFG_BG, rf->channel <= 14);
      rt2x00usb_register_write(rt2x00dev, TX_BAND_CFG, reg);

      tx_pin = 0;

      /* Turn on unused PA or LNA when not using 1T or 1R */
      if (rt2x00dev->default_ant.tx != 1) {
            rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A1_EN, 1);
            rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G1_EN, 1);
      }

      /* Turn on unused PA or LNA when not using 1T or 1R */
      if (rt2x00dev->default_ant.rx != 1) {
            rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN, 1);
            rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN, 1);
      }

      rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN, 1);
      rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G0_EN, 1);
      rt2x00_set_field32(&tx_pin, TX_PIN_CFG_RFTR_EN, 1);
      rt2x00_set_field32(&tx_pin, TX_PIN_CFG_TRSW_EN, 1);
      rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G0_EN, rf->channel <= 14);
      rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A0_EN, rf->channel > 14);

      rt2x00usb_register_write(rt2x00dev, TX_PIN_CFG, tx_pin);

      rt2800usb_bbp_read(rt2x00dev, 4, &bbp);
      rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * conf_is_ht40(conf));
      rt2800usb_bbp_write(rt2x00dev, 4, bbp);

      rt2800usb_bbp_read(rt2x00dev, 3, &bbp);
      rt2x00_set_field8(&bbp, BBP3_HT40_PLUS, conf_is_ht40_plus(conf));
      rt2800usb_bbp_write(rt2x00dev, 3, bbp);

      if (rt2x00_rev(&rt2x00dev->chip) == RT2860C_VERSION) {
            if (conf_is_ht40(conf)) {
                  rt2800usb_bbp_write(rt2x00dev, 69, 0x1a);
                  rt2800usb_bbp_write(rt2x00dev, 70, 0x0a);
                  rt2800usb_bbp_write(rt2x00dev, 73, 0x16);
            } else {
                  rt2800usb_bbp_write(rt2x00dev, 69, 0x16);
                  rt2800usb_bbp_write(rt2x00dev, 70, 0x08);
                  rt2800usb_bbp_write(rt2x00dev, 73, 0x11);
            }
      }

      msleep(1);
}

static void rt2800usb_config_txpower(struct rt2x00_dev *rt2x00dev,
                             const int txpower)
{
      u32 reg;
      u32 value = TXPOWER_G_TO_DEV(txpower);
      u8 r1;

      rt2800usb_bbp_read(rt2x00dev, 1, &r1);
      rt2x00_set_field8(&reg, BBP1_TX_POWER, 0);
      rt2800usb_bbp_write(rt2x00dev, 1, r1);

      rt2x00usb_register_read(rt2x00dev, TX_PWR_CFG_0, &reg);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_1MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_2MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_55MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_11MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_6MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_9MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_12MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_0_18MBS, value);
      rt2x00usb_register_write(rt2x00dev, TX_PWR_CFG_0, reg);

      rt2x00usb_register_read(rt2x00dev, TX_PWR_CFG_1, &reg);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_24MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_36MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_48MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_54MBS, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_MCS0, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_MCS1, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_MCS2, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_1_MCS3, value);
      rt2x00usb_register_write(rt2x00dev, TX_PWR_CFG_1, reg);

      rt2x00usb_register_read(rt2x00dev, TX_PWR_CFG_2, &reg);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS4, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS5, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS6, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS7, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS8, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS9, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS10, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_2_MCS11, value);
      rt2x00usb_register_write(rt2x00dev, TX_PWR_CFG_2, reg);

      rt2x00usb_register_read(rt2x00dev, TX_PWR_CFG_3, &reg);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_MCS12, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_MCS13, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_MCS14, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_MCS15, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_UKNOWN1, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_UKNOWN2, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_UKNOWN3, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_3_UKNOWN4, value);
      rt2x00usb_register_write(rt2x00dev, TX_PWR_CFG_3, reg);

      rt2x00usb_register_read(rt2x00dev, TX_PWR_CFG_4, &reg);
      rt2x00_set_field32(&reg, TX_PWR_CFG_4_UKNOWN5, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_4_UKNOWN6, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_4_UKNOWN7, value);
      rt2x00_set_field32(&reg, TX_PWR_CFG_4_UKNOWN8, value);
      rt2x00usb_register_write(rt2x00dev, TX_PWR_CFG_4, reg);
}

static void rt2800usb_config_retry_limit(struct rt2x00_dev *rt2x00dev,
                               struct rt2x00lib_conf *libconf)
{
      u32 reg;

      rt2x00usb_register_read(rt2x00dev, TX_RTY_CFG, &reg);
      rt2x00_set_field32(&reg, TX_RTY_CFG_SHORT_RTY_LIMIT,
                     libconf->conf->short_frame_max_tx_count);
      rt2x00_set_field32(&reg, TX_RTY_CFG_LONG_RTY_LIMIT,
                     libconf->conf->long_frame_max_tx_count);
      rt2x00_set_field32(&reg, TX_RTY_CFG_LONG_RTY_THRE, 2000);
      rt2x00_set_field32(&reg, TX_RTY_CFG_NON_AGG_RTY_MODE, 0);
      rt2x00_set_field32(&reg, TX_RTY_CFG_AGG_RTY_MODE, 0);
      rt2x00_set_field32(&reg, TX_RTY_CFG_TX_AUTO_FB_ENABLE, 1);
      rt2x00usb_register_write(rt2x00dev, TX_RTY_CFG, reg);
}

static void rt2800usb_config_ps(struct rt2x00_dev *rt2x00dev,
                        struct rt2x00lib_conf *libconf)
{
      enum dev_state state =
          (libconf->conf->flags & IEEE80211_CONF_PS) ?
            STATE_SLEEP : STATE_AWAKE;
      u32 reg;

      if (state == STATE_SLEEP) {
            rt2x00usb_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0);

            rt2x00usb_register_read(rt2x00dev, AUTOWAKEUP_CFG, &reg);
            rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTO_LEAD_TIME, 5);
            rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_TBCN_BEFORE_WAKE,
                           libconf->conf->listen_interval - 1);
            rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTOWAKE, 1);
            rt2x00usb_register_write(rt2x00dev, AUTOWAKEUP_CFG, reg);

            rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
      } else {
            rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);

            rt2x00usb_register_read(rt2x00dev, AUTOWAKEUP_CFG, &reg);
            rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTO_LEAD_TIME, 0);
            rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_TBCN_BEFORE_WAKE, 0);
            rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTOWAKE, 0);
            rt2x00usb_register_write(rt2x00dev, AUTOWAKEUP_CFG, reg);
      }
}

static void rt2800usb_config(struct rt2x00_dev *rt2x00dev,
                       struct rt2x00lib_conf *libconf,
                       const unsigned int flags)
{
      /* Always recalculate LNA gain before changing configuration */
      rt2800usb_config_lna_gain(rt2x00dev, libconf);

      if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
            rt2800usb_config_channel(rt2x00dev, libconf->conf,
                               &libconf->rf, &libconf->channel);
      if (flags & IEEE80211_CONF_CHANGE_POWER)
            rt2800usb_config_txpower(rt2x00dev, libconf->conf->power_level);
      if (flags & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
            rt2800usb_config_retry_limit(rt2x00dev, libconf);
      if (flags & IEEE80211_CONF_CHANGE_PS)
            rt2800usb_config_ps(rt2x00dev, libconf);
}

/*
 * Link tuning
 */
static void rt2800usb_link_stats(struct rt2x00_dev *rt2x00dev,
                         struct link_qual *qual)
{
      u32 reg;

      /*
       * Update FCS error count from register.
       */
      rt2x00usb_register_read(rt2x00dev, RX_STA_CNT0, &reg);
      qual->rx_failed = rt2x00_get_field32(reg, RX_STA_CNT0_CRC_ERR);
}

static u8 rt2800usb_get_default_vgc(struct rt2x00_dev *rt2x00dev)
{
      if (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ) {
            if (rt2x00_rev(&rt2x00dev->chip) == RT3070_VERSION)
                  return 0x1c + (2 * rt2x00dev->lna_gain);
            else
                  return 0x2e + rt2x00dev->lna_gain;
      }

      if (!test_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags))
            return 0x32 + (rt2x00dev->lna_gain * 5) / 3;
      else
            return 0x3a + (rt2x00dev->lna_gain * 5) / 3;
}

static inline void rt2800usb_set_vgc(struct rt2x00_dev *rt2x00dev,
                             struct link_qual *qual, u8 vgc_level)
{
      if (qual->vgc_level != vgc_level) {
            rt2800usb_bbp_write(rt2x00dev, 66, vgc_level);
            qual->vgc_level = vgc_level;
            qual->vgc_level_reg = vgc_level;
      }
}

static void rt2800usb_reset_tuner(struct rt2x00_dev *rt2x00dev,
                          struct link_qual *qual)
{
      rt2800usb_set_vgc(rt2x00dev, qual,
                    rt2800usb_get_default_vgc(rt2x00dev));
}

static void rt2800usb_link_tuner(struct rt2x00_dev *rt2x00dev,
                         struct link_qual *qual, const u32 count)
{
      if (rt2x00_rev(&rt2x00dev->chip) == RT2860C_VERSION)
            return;

      /*
       * When RSSI is better then -80 increase VGC level with 0x10
       */
      rt2800usb_set_vgc(rt2x00dev, qual,
                    rt2800usb_get_default_vgc(rt2x00dev) +
                    ((qual->rssi > -80) * 0x10));
}

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

static bool rt2800usb_check_crc(const u8 *data, const size_t len)
{
      u16 fw_crc;
      u16 crc;

      /*
       * The last 2 bytes in the firmware array are the crc checksum itself,
       * this means that we should never pass those 2 bytes to the crc
       * algorithm.
       */
      fw_crc = (data[len - 2] << 8 | data[len - 1]);

      /*
       * Use the crc ccitt algorithm.
       * This will return the same value as the legacy driver which
       * used bit ordering reversion on the both the firmware bytes
       * before input input as well as on the final output.
       * Obviously using crc ccitt directly is much more efficient.
       */
      crc = crc_ccitt(~0, data, len - 2);

      /*
       * There is a small difference between the crc-itu-t + bitrev and
       * the crc-ccitt crc calculation. In the latter method the 2 bytes
       * will be swapped, use swab16 to convert the crc to the correct
       * value.
       */
      crc = swab16(crc);

      return fw_crc == crc;
}

static int rt2800usb_check_firmware(struct rt2x00_dev *rt2x00dev,
                            const u8 *data, const size_t len)
{
      u16 chipset = (rt2x00_rev(&rt2x00dev->chip) >> 16) & 0xffff;
      size_t offset = 0;

      /*
       * Firmware files:
       * There are 2 variations of the rt2870 firmware.
       * a) size: 4kb
       * b) size: 8kb
       * Note that (b) contains 2 seperate firmware blobs of 4k
       * within the file. The first blob is the same firmware as (a),
       * but the second blob is for the additional chipsets.
       */
      if (len != 4096 && len != 8192)
            return FW_BAD_LENGTH;

      /*
       * Check if we need the upper 4kb firmware data or not.
       */
      if ((len == 4096) &&
          (chipset != 0x2860) &&
          (chipset != 0x2872) &&
          (chipset != 0x3070))
            return FW_BAD_VERSION;

      /*
       * 8kb firmware files must be checked as if it were
       * 2 seperate firmware files.
       */
      while (offset < len) {
            if (!rt2800usb_check_crc(data + offset, 4096))
                  return FW_BAD_CRC;

            offset += 4096;
      }

      return FW_OK;
}

static int rt2800usb_load_firmware(struct rt2x00_dev *rt2x00dev,
                           const u8 *data, const size_t len)
{
      unsigned int i;
      int status;
      u32 reg;
      u32 offset;
      u32 length;
      u16 chipset = (rt2x00_rev(&rt2x00dev->chip) >> 16) & 0xffff;

      /*
       * Check which section of the firmware we need.
       */
      if ((chipset == 0x2860) ||
          (chipset == 0x2872) ||
          (chipset == 0x3070)) {
            offset = 0;
            length = 4096;
      } else {
            offset = 4096;
            length = 4096;
      }

      /*
       * Wait for stable hardware.
       */
      for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
            rt2x00usb_register_read(rt2x00dev, MAC_CSR0, &reg);
            if (reg && reg != ~0)
                  break;
            msleep(1);
      }

      if (i == REGISTER_BUSY_COUNT) {
            ERROR(rt2x00dev, "Unstable hardware.\n");
            return -EBUSY;
      }

      /*
       * Write firmware to device.
       */
      rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
                                  USB_VENDOR_REQUEST_OUT,
                                  FIRMWARE_IMAGE_BASE,
                                  data + offset, length,
                                  REGISTER_TIMEOUT32(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);

      /*
       * Send signal to firmware during boot time.
       */
      rt2800usb_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0xff, 0, 0);

      if ((chipset == 0x3070) ||
          (chipset == 0x3071) ||
          (chipset == 0x3572)) {
            udelay(200);
            rt2800usb_mcu_request(rt2x00dev, MCU_CURRENT, 0, 0, 0);
            udelay(10);
      }

      /*
       * Wait for device to stabilize.
       */
      for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
            rt2x00usb_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
            if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY))
                  break;
            msleep(1);
      }

      if (i == REGISTER_BUSY_COUNT) {
            ERROR(rt2x00dev, "PBF system register not ready.\n");
            return -EBUSY;
      }

      /*
       * Initialize firmware.
       */
      rt2x00usb_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
      rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
      msleep(1);

      return 0;
}

/*
 * Initialization functions.
 */
static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
{
      u32 reg;
      unsigned int i;

      /*
       * Wait untill BBP and RF are ready.
       */
      for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
            rt2x00usb_register_read(rt2x00dev, MAC_CSR0, &reg);
            if (reg && reg != ~0)
                  break;
            msleep(1);
      }

      if (i == REGISTER_BUSY_COUNT) {
            ERROR(rt2x00dev, "Unstable hardware.\n");
            return -EBUSY;
      }

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

      rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
      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);

      rt2x00usb_register_read(rt2x00dev, BCN_OFFSET0, &reg);
      rt2x00_set_field32(&reg, BCN_OFFSET0_BCN0, 0xe0); /* 0x3800 */
      rt2x00_set_field32(&reg, BCN_OFFSET0_BCN1, 0xe8); /* 0x3a00 */
      rt2x00_set_field32(&reg, BCN_OFFSET0_BCN2, 0xf0); /* 0x3c00 */
      rt2x00_set_field32(&reg, BCN_OFFSET0_BCN3, 0xf8); /* 0x3e00 */
      rt2x00usb_register_write(rt2x00dev, BCN_OFFSET0, reg);

      rt2x00usb_register_read(rt2x00dev, BCN_OFFSET1, &reg);
      rt2x00_set_field32(&reg, BCN_OFFSET1_BCN4, 0xc8); /* 0x3200 */
      rt2x00_set_field32(&reg, BCN_OFFSET1_BCN5, 0xd0); /* 0x3400 */
      rt2x00_set_field32(&reg, BCN_OFFSET1_BCN6, 0x77); /* 0x1dc0 */
      rt2x00_set_field32(&reg, BCN_OFFSET1_BCN7, 0x6f); /* 0x1bc0 */
      rt2x00usb_register_write(rt2x00dev, BCN_OFFSET1, reg);

      rt2x00usb_register_write(rt2x00dev, LEGACY_BASIC_RATE, 0x0000013f);
      rt2x00usb_register_write(rt2x00dev, HT_BASIC_RATE, 0x00008003);

      rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, 0x00000000);

      rt2x00usb_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
      rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_INTERVAL, 0);
      rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 0);
      rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_SYNC, 0);
      rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 0);
      rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 0);
      rt2x00_set_field32(&reg, BCN_TIME_CFG_TX_TIME_COMPENSATE, 0);
      rt2x00usb_register_write(rt2x00dev, BCN_TIME_CFG, reg);

      if (rt2x00_rev(&rt2x00dev->chip) == RT3070_VERSION) {
            rt2x00usb_register_write(rt2x00dev, TX_SW_CFG0, 0x00000400);
            rt2x00usb_register_write(rt2x00dev, TX_SW_CFG1, 0x00000000);
            rt2x00usb_register_write(rt2x00dev, TX_SW_CFG2, 0x00000000);
      } else {
            rt2x00usb_register_write(rt2x00dev, TX_SW_CFG0, 0x00000000);
            rt2x00usb_register_write(rt2x00dev, TX_SW_CFG1, 0x00080606);
      }

      rt2x00usb_register_read(rt2x00dev, TX_LINK_CFG, &reg);
      rt2x00_set_field32(&reg, TX_LINK_CFG_REMOTE_MFB_LIFETIME, 32);
      rt2x00_set_field32(&reg, TX_LINK_CFG_MFB_ENABLE, 0);
      rt2x00_set_field32(&reg, TX_LINK_CFG_REMOTE_UMFS_ENABLE, 0);
      rt2x00_set_field32(&reg, TX_LINK_CFG_TX_MRQ_EN, 0);
      rt2x00_set_field32(&reg, TX_LINK_CFG_TX_RDG_EN, 0);
      rt2x00_set_field32(&reg, TX_LINK_CFG_TX_CF_ACK_EN, 1);
      rt2x00_set_field32(&reg, TX_LINK_CFG_REMOTE_MFB, 0);
      rt2x00_set_field32(&reg, TX_LINK_CFG_REMOTE_MFS, 0);
      rt2x00usb_register_write(rt2x00dev, TX_LINK_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, TX_TIMEOUT_CFG, &reg);
      rt2x00_set_field32(&reg, TX_TIMEOUT_CFG_MPDU_LIFETIME, 9);
      rt2x00_set_field32(&reg, TX_TIMEOUT_CFG_TX_OP_TIMEOUT, 10);
      rt2x00usb_register_write(rt2x00dev, TX_TIMEOUT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, MAX_LEN_CFG, &reg);
      rt2x00_set_field32(&reg, MAX_LEN_CFG_MAX_MPDU, AGGREGATION_SIZE);
      if (rt2x00_rev(&rt2x00dev->chip) >= RT2880E_VERSION &&
          rt2x00_rev(&rt2x00dev->chip) < RT3070_VERSION)
            rt2x00_set_field32(&reg, MAX_LEN_CFG_MAX_PSDU, 2);
      else
            rt2x00_set_field32(&reg, MAX_LEN_CFG_MAX_PSDU, 1);
      rt2x00_set_field32(&reg, MAX_LEN_CFG_MIN_PSDU, 0);
      rt2x00_set_field32(&reg, MAX_LEN_CFG_MIN_MPDU, 0);
      rt2x00usb_register_write(rt2x00dev, MAX_LEN_CFG, reg);

      rt2x00usb_register_write(rt2x00dev, PBF_MAX_PCNT, 0x1f3fbf9f);

      rt2x00usb_register_read(rt2x00dev, AUTO_RSP_CFG, &reg);
      rt2x00_set_field32(&reg, AUTO_RSP_CFG_AUTORESPONDER, 1);
      rt2x00_set_field32(&reg, AUTO_RSP_CFG_CTS_40_MMODE, 0);
      rt2x00_set_field32(&reg, AUTO_RSP_CFG_CTS_40_MREF, 0);
      rt2x00_set_field32(&reg, AUTO_RSP_CFG_DUAL_CTS_EN, 0);
      rt2x00_set_field32(&reg, AUTO_RSP_CFG_ACK_CTS_PSM_BIT, 0);
      rt2x00usb_register_write(rt2x00dev, AUTO_RSP_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, CCK_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_PROTECT_RATE, 8);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_PROTECT_CTRL, 0);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_PROTECT_NAV, 1);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_TX_OP_ALLOW_CCK, 1);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_TX_OP_ALLOW_OFDM, 1);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_TX_OP_ALLOW_MM20, 1);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_TX_OP_ALLOW_MM40, 1);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_TX_OP_ALLOW_GF20, 1);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_TX_OP_ALLOW_GF40, 1);
      rt2x00usb_register_write(rt2x00dev, CCK_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, OFDM_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_PROTECT_RATE, 8);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_PROTECT_CTRL, 0);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_PROTECT_NAV, 1);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_TX_OP_ALLOW_CCK, 1);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_TX_OP_ALLOW_OFDM, 1);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_TX_OP_ALLOW_MM20, 1);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_TX_OP_ALLOW_MM40, 1);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_TX_OP_ALLOW_GF20, 1);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_TX_OP_ALLOW_GF40, 1);
      rt2x00usb_register_write(rt2x00dev, OFDM_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, MM20_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_PROTECT_RATE, 0x4004);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_PROTECT_CTRL, 0);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_PROTECT_NAV, 1);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_TX_OP_ALLOW_CCK, 1);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_TX_OP_ALLOW_OFDM, 1);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_TX_OP_ALLOW_MM20, 1);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_TX_OP_ALLOW_MM40, 0);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_TX_OP_ALLOW_GF20, 1);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_TX_OP_ALLOW_GF40, 0);
      rt2x00usb_register_write(rt2x00dev, MM20_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, MM40_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_PROTECT_RATE, 0x4084);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_PROTECT_CTRL, 0);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_PROTECT_NAV, 1);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_TX_OP_ALLOW_CCK, 1);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_TX_OP_ALLOW_OFDM, 1);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_TX_OP_ALLOW_MM20, 1);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_TX_OP_ALLOW_MM40, 1);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_TX_OP_ALLOW_GF20, 1);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_TX_OP_ALLOW_GF40, 1);
      rt2x00usb_register_write(rt2x00dev, MM40_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, GF20_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_PROTECT_RATE, 0x4004);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_PROTECT_CTRL, 0);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_PROTECT_NAV, 1);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_TX_OP_ALLOW_CCK, 1);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_TX_OP_ALLOW_OFDM, 1);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_TX_OP_ALLOW_MM20, 1);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_TX_OP_ALLOW_MM40, 0);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_TX_OP_ALLOW_GF20, 1);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_TX_OP_ALLOW_GF40, 0);
      rt2x00usb_register_write(rt2x00dev, GF20_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, GF40_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_PROTECT_RATE, 0x4084);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_PROTECT_CTRL, 0);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_PROTECT_NAV, 1);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_TX_OP_ALLOW_CCK, 1);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_TX_OP_ALLOW_OFDM, 1);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_TX_OP_ALLOW_MM20, 1);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_TX_OP_ALLOW_MM40, 1);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_TX_OP_ALLOW_GF20, 1);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_TX_OP_ALLOW_GF40, 1);
      rt2x00usb_register_write(rt2x00dev, GF40_PROT_CFG, reg);

      rt2x00usb_register_write(rt2x00dev, PBF_CFG, 0xf40006);

      rt2x00usb_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_DMA_BUSY, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_DMA_BUSY, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_WP_DMA_BURST_SIZE, 3);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_BIG_ENDIAN, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_HDR_SCATTER, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_HDR_SEG_LEN, 0);
      rt2x00usb_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);

      rt2x00usb_register_write(rt2x00dev, TXOP_CTRL_CFG, 0x0000583f);
      rt2x00usb_register_write(rt2x00dev, TXOP_HLDR_ET, 0x00000002);

      rt2x00usb_register_read(rt2x00dev, TX_RTS_CFG, &reg);
      rt2x00_set_field32(&reg, TX_RTS_CFG_AUTO_RTS_RETRY_LIMIT, 32);
      rt2x00_set_field32(&reg, TX_RTS_CFG_RTS_THRES,
                     IEEE80211_MAX_RTS_THRESHOLD);
      rt2x00_set_field32(&reg, TX_RTS_CFG_RTS_FBK_EN, 0);
      rt2x00usb_register_write(rt2x00dev, TX_RTS_CFG, reg);

      rt2x00usb_register_write(rt2x00dev, EXP_ACK_TIME, 0x002400ca);
      rt2x00usb_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);

      /*
       * ASIC will keep garbage value after boot, clear encryption keys.
       */
      for (i = 0; i < 256; i++) {
            u32 wcid[2] = { 0xffffffff, 0x00ffffff };
            rt2x00usb_register_multiwrite(rt2x00dev, MAC_WCID_ENTRY(i),
                                    wcid, sizeof(wcid));

            rt2x00usb_register_write(rt2x00dev, MAC_WCID_ATTR_ENTRY(i), 1);
            rt2x00usb_register_write(rt2x00dev, MAC_IVEIV_ENTRY(i), 0);
      }

      for (i = 0; i < 16; i++)
            rt2x00usb_register_write(rt2x00dev,
                               SHARED_KEY_MODE_ENTRY(i), 0);

      /*
       * Clear all beacons
       * For the Beacon base registers we only need to clear
       * the first byte since that byte contains the VALID and OWNER
       * bits which (when set to 0) will invalidate the entire beacon.
       */
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE0, 0);
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE1, 0);
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE2, 0);
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE3, 0);
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE4, 0);
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE5, 0);
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE6, 0);
      rt2x00usb_register_write(rt2x00dev, HW_BEACON_BASE7, 0);

      rt2x00usb_register_read(rt2x00dev, USB_CYC_CFG, &reg);
      rt2x00_set_field32(&reg, USB_CYC_CFG_CLOCK_CYCLE, 30);
      rt2x00usb_register_write(rt2x00dev, USB_CYC_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, HT_FBK_CFG0, &reg);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS0FBK, 0);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS1FBK, 0);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS2FBK, 1);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS3FBK, 2);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS4FBK, 3);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS5FBK, 4);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS6FBK, 5);
      rt2x00_set_field32(&reg, HT_FBK_CFG0_HTMCS7FBK, 6);
      rt2x00usb_register_write(rt2x00dev, HT_FBK_CFG0, reg);

      rt2x00usb_register_read(rt2x00dev, HT_FBK_CFG1, &reg);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS8FBK, 8);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS9FBK, 8);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS10FBK, 9);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS11FBK, 10);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS12FBK, 11);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS13FBK, 12);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS14FBK, 13);
      rt2x00_set_field32(&reg, HT_FBK_CFG1_HTMCS15FBK, 14);
      rt2x00usb_register_write(rt2x00dev, HT_FBK_CFG1, reg);

      rt2x00usb_register_read(rt2x00dev, LG_FBK_CFG0, &reg);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS0FBK, 8);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS1FBK, 8);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS2FBK, 3);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS3FBK, 10);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS4FBK, 11);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS5FBK, 12);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS6FBK, 13);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_OFDMMCS7FBK, 14);
      rt2x00usb_register_write(rt2x00dev, LG_FBK_CFG0, reg);

      rt2x00usb_register_read(rt2x00dev, LG_FBK_CFG1, &reg);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_CCKMCS0FBK, 0);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_CCKMCS1FBK, 0);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_CCKMCS2FBK, 1);
      rt2x00_set_field32(&reg, LG_FBK_CFG0_CCKMCS3FBK, 2);
      rt2x00usb_register_write(rt2x00dev, LG_FBK_CFG1, reg);

      /*
       * We must clear the error counters.
       * These registers are cleared on read,
       * so we may pass a useless variable to store the value.
       */
      rt2x00usb_register_read(rt2x00dev, RX_STA_CNT0, &reg);
      rt2x00usb_register_read(rt2x00dev, RX_STA_CNT1, &reg);
      rt2x00usb_register_read(rt2x00dev, RX_STA_CNT2, &reg);
      rt2x00usb_register_read(rt2x00dev, TX_STA_CNT0, &reg);
      rt2x00usb_register_read(rt2x00dev, TX_STA_CNT1, &reg);
      rt2x00usb_register_read(rt2x00dev, TX_STA_CNT2, &reg);

      return 0;
}

static int rt2800usb_wait_bbp_rf_ready(struct rt2x00_dev *rt2x00dev)
{
      unsigned int i;
      u32 reg;

      for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
            rt2x00usb_register_read(rt2x00dev, MAC_STATUS_CFG, &reg);
            if (!rt2x00_get_field32(reg, MAC_STATUS_CFG_BBP_RF_BUSY))
                  return 0;

            udelay(REGISTER_BUSY_DELAY);
      }

      ERROR(rt2x00dev, "BBP/RF register access failed, aborting.\n");
      return -EACCES;
}

static int rt2800usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
{
      unsigned int i;
      u8 value;

      /*
       * BBP was enabled after firmware was loaded,
       * but we need to reactivate it now.
       */
      rt2x00usb_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
      rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
      msleep(1);

      for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
            rt2800usb_bbp_read(rt2x00dev, 0, &value);
            if ((value != 0xff) && (value != 0x00))
                  return 0;
            udelay(REGISTER_BUSY_DELAY);
      }

      ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
      return -EACCES;
}

static int rt2800usb_init_bbp(struct rt2x00_dev *rt2x00dev)
{
      unsigned int i;
      u16 eeprom;
      u8 reg_id;
      u8 value;

      if (unlikely(rt2800usb_wait_bbp_rf_ready(rt2x00dev) ||
                 rt2800usb_wait_bbp_ready(rt2x00dev)))
            return -EACCES;

      rt2800usb_bbp_write(rt2x00dev, 65, 0x2c);
      rt2800usb_bbp_write(rt2x00dev, 66, 0x38);
      rt2800usb_bbp_write(rt2x00dev, 69, 0x12);
      rt2800usb_bbp_write(rt2x00dev, 70, 0x0a);
      rt2800usb_bbp_write(rt2x00dev, 73, 0x10);
      rt2800usb_bbp_write(rt2x00dev, 81, 0x37);
      rt2800usb_bbp_write(rt2x00dev, 82, 0x62);
      rt2800usb_bbp_write(rt2x00dev, 83, 0x6a);
      rt2800usb_bbp_write(rt2x00dev, 84, 0x99);
      rt2800usb_bbp_write(rt2x00dev, 86, 0x00);
      rt2800usb_bbp_write(rt2x00dev, 91, 0x04);
      rt2800usb_bbp_write(rt2x00dev, 92, 0x00);
      rt2800usb_bbp_write(rt2x00dev, 103, 0x00);
      rt2800usb_bbp_write(rt2x00dev, 105, 0x05);

      if (rt2x00_rev(&rt2x00dev->chip) == RT2860C_VERSION) {
            rt2800usb_bbp_write(rt2x00dev, 69, 0x16);
            rt2800usb_bbp_write(rt2x00dev, 73, 0x12);
      }

      if (rt2x00_rev(&rt2x00dev->chip) > RT2860D_VERSION) {
            rt2800usb_bbp_write(rt2x00dev, 84, 0x19);
      }

      if (rt2x00_rev(&rt2x00dev->chip) == RT3070_VERSION) {
            rt2800usb_bbp_write(rt2x00dev, 70, 0x0a);
            rt2800usb_bbp_write(rt2x00dev, 84, 0x99);
            rt2800usb_bbp_write(rt2x00dev, 105, 0x05);
      }

      for (i = 0; i < EEPROM_BBP_SIZE; i++) {
            rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);

            if (eeprom != 0xffff && eeprom != 0x0000) {
                  reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
                  value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
                  rt2800usb_bbp_write(rt2x00dev, reg_id, value);
            }
      }

      return 0;
}

static u8 rt2800usb_init_rx_filter(struct rt2x00_dev *rt2x00dev,
                           bool bw40, u8 rfcsr24, u8 filter_target)
{
      unsigned int i;
      u8 bbp;
      u8 rfcsr;
      u8 passband;
      u8 stopband;
      u8 overtuned = 0;

      rt2800usb_rfcsr_write(rt2x00dev, 24, rfcsr24);

      rt2800usb_bbp_read(rt2x00dev, 4, &bbp);
      rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * bw40);
      rt2800usb_bbp_write(rt2x00dev, 4, bbp);

      rt2800usb_rfcsr_read(rt2x00dev, 22, &rfcsr);
      rt2x00_set_field8(&rfcsr, RFCSR22_BASEBAND_LOOPBACK, 1);
      rt2800usb_rfcsr_write(rt2x00dev, 22, rfcsr);

      /*
       * Set power & frequency of passband test tone
       */
      rt2800usb_bbp_write(rt2x00dev, 24, 0);

      for (i = 0; i < 100; i++) {
            rt2800usb_bbp_write(rt2x00dev, 25, 0x90);
            msleep(1);

            rt2800usb_bbp_read(rt2x00dev, 55, &passband);
            if (passband)
                  break;
      }

      /*
       * Set power & frequency of stopband test tone
       */
      rt2800usb_bbp_write(rt2x00dev, 24, 0x06);

      for (i = 0; i < 100; i++) {
            rt2800usb_bbp_write(rt2x00dev, 25, 0x90);
            msleep(1);

            rt2800usb_bbp_read(rt2x00dev, 55, &stopband);

            if ((passband - stopband) <= filter_target) {
                  rfcsr24++;
                  overtuned += ((passband - stopband) == filter_target);
            } else
                  break;

            rt2800usb_rfcsr_write(rt2x00dev, 24, rfcsr24);
      }

      rfcsr24 -= !!overtuned;

      rt2800usb_rfcsr_write(rt2x00dev, 24, rfcsr24);
      return rfcsr24;
}

static int rt2800usb_init_rfcsr(struct rt2x00_dev *rt2x00dev)
{
      u8 rfcsr;
      u8 bbp;

      if (rt2x00_rev(&rt2x00dev->chip) != RT3070_VERSION)
            return 0;

      /*
       * Init RF calibration.
       */
      rt2800usb_rfcsr_read(rt2x00dev, 30, &rfcsr);
      rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 1);
      rt2800usb_rfcsr_write(rt2x00dev, 30, rfcsr);
      msleep(1);
      rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 0);
      rt2800usb_rfcsr_write(rt2x00dev, 30, rfcsr);

      rt2800usb_rfcsr_write(rt2x00dev, 4, 0x40);
      rt2800usb_rfcsr_write(rt2x00dev, 5, 0x03);
      rt2800usb_rfcsr_write(rt2x00dev, 6, 0x02);
      rt2800usb_rfcsr_write(rt2x00dev, 7, 0x70);
      rt2800usb_rfcsr_write(rt2x00dev, 9, 0x0f);
      rt2800usb_rfcsr_write(rt2x00dev, 10, 0x71);
      rt2800usb_rfcsr_write(rt2x00dev, 11, 0x21);
      rt2800usb_rfcsr_write(rt2x00dev, 12, 0x7b);
      rt2800usb_rfcsr_write(rt2x00dev, 14, 0x90);
      rt2800usb_rfcsr_write(rt2x00dev, 15, 0x58);
      rt2800usb_rfcsr_write(rt2x00dev, 16, 0xb3);
      rt2800usb_rfcsr_write(rt2x00dev, 17, 0x92);
      rt2800usb_rfcsr_write(rt2x00dev, 18, 0x2c);
      rt2800usb_rfcsr_write(rt2x00dev, 19, 0x02);
      rt2800usb_rfcsr_write(rt2x00dev, 20, 0xba);
      rt2800usb_rfcsr_write(rt2x00dev, 21, 0xdb);
      rt2800usb_rfcsr_write(rt2x00dev, 24, 0x16);
      rt2800usb_rfcsr_write(rt2x00dev, 25, 0x01);
      rt2800usb_rfcsr_write(rt2x00dev, 27, 0x03);
      rt2800usb_rfcsr_write(rt2x00dev, 29, 0x1f);

      /*
       * Set RX Filter calibration for 20MHz and 40MHz
       */
      rt2x00dev->calibration[0] =
          rt2800usb_init_rx_filter(rt2x00dev, false, 0x07, 0x16);
      rt2x00dev->calibration[1] =
          rt2800usb_init_rx_filter(rt2x00dev, true, 0x27, 0x19);

      /*
       * Set back to initial state
       */
      rt2800usb_bbp_write(rt2x00dev, 24, 0);

      rt2800usb_rfcsr_read(rt2x00dev, 22, &rfcsr);
      rt2x00_set_field8(&rfcsr, RFCSR22_BASEBAND_LOOPBACK, 0);
      rt2800usb_rfcsr_write(rt2x00dev, 22, rfcsr);

      /*
       * set BBP back to BW20
       */
      rt2800usb_bbp_read(rt2x00dev, 4, &bbp);
      rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 0);
      rt2800usb_bbp_write(rt2x00dev, 4, bbp);

      return 0;
}

/*
 * Device state switch handlers.
 */
static void rt2800usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
                        enum dev_state state)
{
      u32 reg;

      rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
      rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX,
                     (state == STATE_RADIO_RX_ON) ||
                     (state == STATE_RADIO_RX_ON_LINK));
      rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
}

static int rt2800usb_wait_wpdma_ready(struct rt2x00_dev *rt2x00dev)
{
      unsigned int i;
      u32 reg;

      for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
            rt2x00usb_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
            if (!rt2x00_get_field32(reg, WPDMA_GLO_CFG_TX_DMA_BUSY) &&
                !rt2x00_get_field32(reg, WPDMA_GLO_CFG_RX_DMA_BUSY))
                  return 0;

            msleep(1);
      }

      ERROR(rt2x00dev, "WPDMA TX/RX busy, aborting.\n");
      return -EACCES;
}

static int rt2800usb_enable_radio(struct rt2x00_dev *rt2x00dev)
{
      u32 reg;
      u16 word;

      /*
       * Initialize all registers.
       */
      if (unlikely(rt2800usb_wait_wpdma_ready(rt2x00dev) ||
                 rt2800usb_init_registers(rt2x00dev) ||
                 rt2800usb_init_bbp(rt2x00dev) ||
                 rt2800usb_init_rfcsr(rt2x00dev)))
            return -EIO;

      rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
      rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_TX, 1);
      rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);

      udelay(50);

      rt2x00usb_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 1);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 1);
      rt2x00usb_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);


      rt2x00usb_register_read(rt2x00dev, USB_DMA_CFG, &reg);
      rt2x00_set_field32(&reg, USB_DMA_CFG_PHY_CLEAR, 0);
      /* Don't use bulk in aggregation when working with USB 1.1 */
      rt2x00_set_field32(&reg, USB_DMA_CFG_RX_BULK_AGG_EN,
                     (rt2x00dev->rx->usb_maxpacket == 512));
      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,
                     ((RX_ENTRIES * 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);

      rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
      rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_TX, 1);
      rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 1);
      rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);

      /*
       * Initialize LED control
       */
      rt2x00_eeprom_read(rt2x00dev, EEPROM_LED1, &word);
      rt2800usb_mcu_request(rt2x00dev, MCU_LED_1, 0xff,
                        word & 0xff, (word >> 8) & 0xff);

      rt2x00_eeprom_read(rt2x00dev, EEPROM_LED2, &word);
      rt2800usb_mcu_request(rt2x00dev, MCU_LED_2, 0xff,
                        word & 0xff, (word >> 8) & 0xff);

      rt2x00_eeprom_read(rt2x00dev, EEPROM_LED3, &word);
      rt2800usb_mcu_request(rt2x00dev, MCU_LED_3, 0xff,
                        word & 0xff, (word >> 8) & 0xff);

      return 0;
}

static void rt2800usb_disable_radio(struct rt2x00_dev *rt2x00dev)
{
      u32 reg;

      rt2x00usb_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
      rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
      rt2x00usb_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);

      rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, 0);
      rt2x00usb_register_write(rt2x00dev, PWR_PIN_CFG, 0);
      rt2x00usb_register_write(rt2x00dev, TX_PIN_CFG, 0);

      /* Wait for DMA, ignore error */
      rt2800usb_wait_wpdma_ready(rt2x00dev);

      rt2x00usb_disable_radio(rt2x00dev);
}

static int rt2800usb_set_state(struct rt2x00_dev *rt2x00dev,
                         enum dev_state state)
{
      if (state == STATE_AWAKE)
            rt2800usb_mcu_request(rt2x00dev, MCU_WAKEUP, 0xff, 0, 0);
      else
            rt2800usb_mcu_request(rt2x00dev, MCU_SLEEP, 0xff, 0, 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 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 disablee, the device should
             * be put to sleep for powersaving.
             */
            rt2800usb_disable_radio(rt2x00dev);
            rt2800usb_set_state(rt2x00dev, STATE_SLEEP);
            break;
      case STATE_RADIO_RX_ON:
      case STATE_RADIO_RX_ON_LINK:
      case STATE_RADIO_RX_OFF:
      case STATE_RADIO_RX_OFF_LINK:
            rt2800usb_toggle_rx(rt2x00dev, state);
            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;
}

/*
 * TX descriptor initialization
 */
static void rt2800usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
                            struct sk_buff *skb,
                            struct txentry_desc *txdesc)
{
      struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
      __le32 *txi = skbdesc->desc;
      __le32 *txwi = &txi[TXINFO_DESC_SIZE / sizeof(__le32)];
      u32 word;

      /*
       * Initialize TX Info descriptor
       */
      rt2x00_desc_read(txwi, 0, &word);
      rt2x00_set_field32(&word, TXWI_W0_FRAG,
                     test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
      rt2x00_set_field32(&word, TXWI_W0_MIMO_PS, 0);
      rt2x00_set_field32(&word, TXWI_W0_CF_ACK, 0);
      rt2x00_set_field32(&word, TXWI_W0_TS,
                     test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
      rt2x00_set_field32(&word, TXWI_W0_AMPDU,
                     test_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags));
      rt2x00_set_field32(&word, TXWI_W0_MPDU_DENSITY, txdesc->mpdu_density);
      rt2x00_set_field32(&word, TXWI_W0_TX_OP, txdesc->ifs);
      rt2x00_set_field32(&word, TXWI_W0_MCS, txdesc->mcs);
      rt2x00_set_field32(&word, TXWI_W0_BW,
                     test_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags));
      rt2x00_set_field32(&word, TXWI_W0_SHORT_GI,
                     test_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags));
      rt2x00_set_field32(&word, TXWI_W0_STBC, txdesc->stbc);
      rt2x00_set_field32(&word, TXWI_W0_PHYMODE, txdesc->rate_mode);
      rt2x00_desc_write(txwi, 0, word);

      rt2x00_desc_read(txwi, 1, &word);
      rt2x00_set_field32(&word, TXWI_W1_ACK,
                     test_bit(ENTRY_TXD_ACK, &txdesc->flags));
      rt2x00_set_field32(&word, TXWI_W1_NSEQ,
                     test_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags));
      rt2x00_set_field32(&word, TXWI_W1_BW_WIN_SIZE, txdesc->ba_size);
      rt2x00_set_field32(&word, TXWI_W1_WIRELESS_CLI_ID,
                     test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags) ?
                         txdesc->key_idx : 0xff);
      rt2x00_set_field32(&word, TXWI_W1_MPDU_TOTAL_BYTE_COUNT,
                     skb->len - txdesc->l2pad);
      rt2x00_set_field32(&word, TXWI_W1_PACKETID,
                     skbdesc->entry->entry_idx);
      rt2x00_desc_write(txwi, 1, word);

      /*
       * Always write 0 to IV/EIV fields, hardware will insert the IV
       * from the IVEIV register when TXINFO_W0_WIV is set to 0.
       * When TXINFO_W0_WIV is set to 1 it will use the IV data
       * from the descriptor. The TXWI_W1_WIRELESS_CLI_ID indicates which
       * crypto entry in the registers should be used to encrypt the frame.
       */
      _rt2x00_desc_write(txwi, 2, 0 /* skbdesc->iv[0] */);
      _rt2x00_desc_write(txwi, 3, 0 /* skbdesc->iv[1] */);

      /*
       * Initialize TX descriptor
       */
      rt2x00_desc_read(txi, 0, &word);
      rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_TX_PKT_LEN,
                     skb->len + TXWI_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);
}

/*
 * TX data initialization
 */
static void rt2800usb_write_beacon(struct queue_entry *entry)
{
      struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
      struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
      unsigned int beacon_base;
      u32 reg;

      /*
       * Add the descriptor in front of the skb.
       */
      skb_push(entry->skb, entry->queue->desc_size);
      memcpy(entry->skb->data, skbdesc->desc, skbdesc->desc_len);
      skbdesc->desc = entry->skb->data;

      /*
       * Disable beaconing while we are reloading the beacon data,
       * otherwise we might be sending out invalid data.
       */
      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);

      /*
       * Write entire beacon with descriptor to register.
       */
      beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
      rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
                                  USB_VENDOR_REQUEST_OUT, beacon_base,
                                  entry->skb->data, entry->skb->len,
                                  REGISTER_TIMEOUT32(entry->skb->len));

      /*
       * Clean up the beacon skb.
       */
      dev_kfree_skb(entry->skb);
      entry->skb = NULL;
}

static int rt2800usb_get_tx_data_len(struct queue_entry *entry)
{
      int length;

      /*
       * The length _must_ include 4 bytes padding,
       * it should always be multiple of 4,
       * but it must _not_ be a multiple of the USB packet size.
       */
      length = roundup(entry->skb->len + 4, 4);
      length += (4 * !(length % entry->queue->usb_maxpacket));

      return length;
}

static void rt2800usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
                            const enum data_queue_qid queue)
{
      u32 reg;

      if (queue != QID_BEACON) {
            rt2x00usb_kick_tx_queue(rt2x00dev, queue);
            return;
      }

      rt2x00usb_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
      if (!rt2x00_get_field32(reg, BCN_TIME_CFG_BEACON_GEN)) {
            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);
      }
}

/*
 * RX control handlers
 */
static void rt2800usb_fill_rxdone(struct queue_entry *entry,
                          struct rxdone_entry_desc *rxdesc)
{
      struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
      struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
      __le32 *rxd = (__le32 *)entry->skb->data;
      __le32 *rxwi;
      u32 rxd0;
      u32 rxwi0;
      u32 rxwi1;
      u32 rxwi2;
      u32 rxwi3;

      /*
       * Copy descriptor to the skbdesc->desc buffer, making it safe from
       * moving of frame data in rt2x00usb.
       */
      memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
      rxd = (__le32 *)skbdesc->desc;
      rxwi = &rxd[RXD_DESC_SIZE / sizeof(__le32)];

      /*
       * It is now safe to read the descriptor on all architectures.
       */
      rt2x00_desc_read(rxd, 0, &rxd0);
      rt2x00_desc_read(rxwi, 0, &rxwi0);
      rt2x00_desc_read(rxwi, 1, &rxwi1);
      rt2x00_desc_read(rxwi, 2, &rxwi2);
      rt2x00_desc_read(rxwi, 3, &rxwi3);

      if (rt2x00_get_field32(rxd0, RXD_W0_CRC_ERROR))
            rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;

      if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) {
            rxdesc->cipher = rt2x00_get_field32(rxwi0, RXWI_W0_UDF);
            rxdesc->cipher_status =
                rt2x00_get_field32(rxd0, RXD_W0_CIPHER_ERROR);
      }

      if (rt2x00_get_field32(rxd0, 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;

            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(rxd0, RXD_W0_MY_BSS))
            rxdesc->dev_flags |= RXDONE_MY_BSS;

      if (rt2x00_get_field32(rxd0, RXD_W0_L2PAD))
            rxdesc->dev_flags |= RXDONE_L2PAD;

      if (rt2x00_get_field32(rxwi1, RXWI_W1_SHORT_GI))
            rxdesc->flags |= RX_FLAG_SHORT_GI;

      if (rt2x00_get_field32(rxwi1, RXWI_W1_BW))
            rxdesc->flags |= RX_FLAG_40MHZ;

      /*
       * Detect RX rate, always use MCS as signal type.
       */
      rxdesc->dev_flags |= RXDONE_SIGNAL_MCS;
      rxdesc->rate_mode = rt2x00_get_field32(rxwi1, RXWI_W1_PHYMODE);
      rxdesc->signal = rt2x00_get_field32(rxwi1, RXWI_W1_MCS);

      /*
       * Mask of 0x8 bit to remove the short preamble flag.
       */
      if (rxdesc->rate_mode == RATE_MODE_CCK)
            rxdesc->signal &= ~0x8;

      rxdesc->rssi =
          (rt2x00_get_field32(rxwi2, RXWI_W2_RSSI0) +
           rt2x00_get_field32(rxwi2, RXWI_W2_RSSI1)) / 2;

      rxdesc->noise =
          (rt2x00_get_field32(rxwi3, RXWI_W3_SNR0) +
           rt2x00_get_field32(rxwi3, RXWI_W3_SNR1)) / 2;

      rxdesc->size = rt2x00_get_field32(rxwi0, RXWI_W0_MPDU_TOTAL_BYTE_COUNT);

      /*
       * Remove RXWI descriptor from start of buffer.
       */
      skb_pull(entry->skb, skbdesc->desc_len);
      skb_trim(entry->skb, rxdesc->size);
}

/*
 * Device probe functions.
 */
static int rt2800usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
{
      u16 word;
      u8 *mac;
      u8 default_lna_gain;

      rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);

      /*
       * Start validation of the data that has been read.
       */
      mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
      if (!is_valid_ether_addr(mac)) {
            DECLARE_MAC_BUF(macbuf);

            random_ether_addr(mac);
            EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
      }

      rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
      if (word == 0xffff) {
            rt2x00_set_field16(&word, EEPROM_ANTENNA_RXPATH, 2);
            rt2x00_set_field16(&word, EEPROM_ANTENNA_TXPATH, 1);
            rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2820);
            rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
            EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
      } else if (rt2x00_rev(&rt2x00dev->chip) < RT2883_VERSION) {
            /*
             * There is a max of 2 RX streams for RT2870 series
             */
            if (rt2x00_get_field16(word, EEPROM_ANTENNA_RXPATH) > 2)
                  rt2x00_set_field16(&word, EEPROM_ANTENNA_RXPATH, 2);
            rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
      }

      rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
      if (word == 0xffff) {
            rt2x00_set_field16(&word, EEPROM_NIC_HW_RADIO, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_DYNAMIC_TX_AGC, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA_BG, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA_A, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_BW40M_SB_BG, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_BW40M_SB_A, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_WPS_PBC, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_BW40M_BG, 0);
            rt2x00_set_field16(&word, EEPROM_NIC_BW40M_A, 0);
            rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
            EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
      }

      rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &word);
      if ((word & 0x00ff) == 0x00ff) {
            rt2x00_set_field16(&word, EEPROM_FREQ_OFFSET, 0);
            rt2x00_set_field16(&word, EEPROM_FREQ_LED_MODE,
                           LED_MODE_TXRX_ACTIVITY);
            rt2x00_set_field16(&word, EEPROM_FREQ_LED_POLARITY, 0);
            rt2x00_eeprom_write(rt2x00dev, EEPROM_FREQ, word);
            rt2x00_eeprom_write(rt2x00dev, EEPROM_LED1, 0x5555);
            rt2x00_eeprom_write(rt2x00dev, EEPROM_LED2, 0x2221);
            rt2x00_eeprom_write(rt2x00dev, EEPROM_LED3, 0xa9f8);
            EEPROM(rt2x00dev, "Freq: 0x%04x\n", word);
      }

      /*
       * During the LNA validation we are going to use
       * lna0 as correct value. Note that EEPROM_LNA
       * is never validated.
       */
      rt2x00_eeprom_read(rt2x00dev, EEPROM_LNA, &word);
      default_lna_gain = rt2x00_get_field16(word, EEPROM_LNA_A0);

      rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_BG, &word);
      if (abs(rt2x00_get_field16(word, EEPROM_RSSI_BG_OFFSET0)) > 10)
            rt2x00_set_field16(&word, EEPROM_RSSI_BG_OFFSET0, 0);
      if (abs(rt2x00_get_field16(word, EEPROM_RSSI_BG_OFFSET1)) > 10)
            rt2x00_set_field16(&word, EEPROM_RSSI_BG_OFFSET1, 0);
      rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_BG, word);

      rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_BG2, &word);
      if (abs(rt2x00_get_field16(word, EEPROM_RSSI_BG2_OFFSET2)) > 10)
            rt2x00_set_field16(&word, EEPROM_RSSI_BG2_OFFSET2, 0);
      if (rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0x00 ||
          rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0xff)
            rt2x00_set_field16(&word, EEPROM_RSSI_BG2_LNA_A1,
                           default_lna_gain);
      rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_BG2, word);

      rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_A, &word);
      if (abs(rt2x00_get_field16(word, EEPROM_RSSI_A_OFFSET0)) > 10)
            rt2x00_set_field16(&word, EEPROM_RSSI_A_OFFSET0, 0);
      if (abs(rt2x00_get_field16(word, EEPROM_RSSI_A_OFFSET1)) > 10)
            rt2x00_set_field16(&word, EEPROM_RSSI_A_OFFSET1, 0);
      rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_A, word);

      rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_A2, &word);
      if (abs(rt2x00_get_field16(word, EEPROM_RSSI_A2_OFFSET2)) > 10)
            rt2x00_set_field16(&word, EEPROM_RSSI_A2_OFFSET2, 0);
      if (rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0x00 ||
          rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0xff)
            rt2x00_set_field16(&word, EEPROM_RSSI_A2_LNA_A2,
                           default_lna_gain);
      rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_A2, word);

      return 0;
}

static int rt2800usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
{
      u32 reg;
      u16 value;
      u16 eeprom;

      /*
       * Read EEPROM word for configuration.
       */
      rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);

      /*
       * Identify RF chipset.
       */
      value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
      rt2x00usb_register_read(rt2x00dev, MAC_CSR0, &reg);
      rt2x00_set_chip(rt2x00dev, RT2870, value, reg);

      /*
       * The check for rt2860 is not a typo, some rt2870 hardware
       * identifies itself as rt2860 in the CSR register.
       */
      if (!rt2x00_check_rev(&rt2x00dev->chip, 0xfff00000, 0x28600000) &&
          !rt2x00_check_rev(&rt2x00dev->chip, 0xfff00000, 0x28700000) &&
          !rt2x00_check_rev(&rt2x00dev->chip, 0xfff00000, 0x28800000) &&
          !rt2x00_check_rev(&rt2x00dev->chip, 0xffff0000, 0x30700000)) {
            ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
            return -ENODEV;
      }

      if (!rt2x00_rf(&rt2x00dev->chip, RF2820) &&
          !rt2x00_rf(&rt2x00dev->chip, RF2850) &&
          !rt2x00_rf(&rt2x00dev->chip, RF2720) &&
          !rt2x00_rf(&rt2x00dev->chip, RF2750) &&
          !rt2x00_rf(&rt2x00dev->chip, RF3020) &&
          !rt2x00_rf(&rt2x00dev->chip, RF2020)) {
            ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
            return -ENODEV;
      }

      /*
       * Identify default antenna configuration.
       */
      rt2x00dev->default_ant.tx =
          rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH);
      rt2x00dev->default_ant.rx =
          rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH);

      /*
       * Read frequency offset and RF programming sequence.
       */
      rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
      rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);

      /*
       * Read external LNA informations.
       */
      rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);

      if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA_A))
            __set_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
      if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA_BG))
            __set_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);

      /*
       * Detect if this device has an hardware controlled radio.
       */
#ifdef CONFIG_RT2X00_LIB_RFKILL
      if (rt2x00_get_field16(eeprom, EEPROM_NIC_HW_RADIO))
            __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
#endif /* CONFIG_RT2X00_LIB_RFKILL */

      /*
       * Store led settings, for correct led behaviour.
       */
#ifdef CONFIG_RT2X00_LIB_LEDS
      rt2800usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
      rt2800usb_init_led(rt2x00dev, &rt2x00dev->led_assoc, LED_TYPE_ASSOC);
      rt2800usb_init_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_QUALITY);

      rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ,
                     &rt2x00dev->led_mcu_reg);
#endif /* CONFIG_RT2X00_LIB_LEDS */

      return 0;
}

/*
 * RF value list for rt2870
 * Supports: 2.4 GHz (all) & 5.2 GHz (RF2850 & RF2750)
 */
static const struct rf_channel rf_vals[] = {
      { 1,  0x18402ecc, 0x184c0786, 0x1816b455, 0x1800510b },
      { 2,  0x18402ecc, 0x184c0786, 0x18168a55, 0x1800519f },
      { 3,  0x18402ecc, 0x184c078a, 0x18168a55, 0x1800518b },
      { 4,  0x18402ecc, 0x184c078a, 0x18168a55, 0x1800519f },
      { 5,  0x18402ecc, 0x184c078e, 0x18168a55, 0x1800518b },
      { 6,  0x18402ecc, 0x184c078e, 0x18168a55, 0x1800519f },
      { 7,  0x18402ecc, 0x184c0792, 0x18168a55, 0x1800518b },
      { 8,  0x18402ecc, 0x184c0792, 0x18168a55, 0x1800519f },
      { 9,  0x18402ecc, 0x184c0796, 0x18168a55, 0x1800518b },
      { 10, 0x18402ecc, 0x184c0796, 0x18168a55, 0x1800519f },
      { 11, 0x18402ecc, 0x184c079a, 0x18168a55, 0x1800518b },
      { 12, 0x18402ecc, 0x184c079a, 0x18168a55, 0x1800519f },
      { 13, 0x18402ecc, 0x184c079e, 0x18168a55, 0x1800518b },
      { 14, 0x18402ecc, 0x184c07a2, 0x18168a55, 0x18005193 },

      /* 802.11 UNI / HyperLan 2 */
      { 36, 0x18402ecc, 0x184c099a, 0x18158a55, 0x180ed1a3 },
      { 38, 0x18402ecc, 0x184c099e, 0x18158a55, 0x180ed193 },
      { 40, 0x18402ec8, 0x184c0682, 0x18158a55, 0x180ed183 },
      { 44, 0x18402ec8, 0x184c0682, 0x18158a55, 0x180ed1a3 },
      { 46, 0x18402ec8, 0x184c0686, 0x18158a55, 0x180ed18b },
      { 48, 0x18402ec8, 0x184c0686, 0x18158a55, 0x180ed19b },
      { 52, 0x18402ec8, 0x184c068a, 0x18158a55, 0x180ed193 },
      { 54, 0x18402ec8, 0x184c068a, 0x18158a55, 0x180ed1a3 },
      { 56, 0x18402ec8, 0x184c068e, 0x18158a55, 0x180ed18b },
      { 60, 0x18402ec8, 0x184c0692, 0x18158a55, 0x180ed183 },
      { 62, 0x18402ec8, 0x184c0692, 0x18158a55, 0x180ed193 },
      { 64, 0x18402ec8, 0x184c0692, 0x18158a55, 0x180ed1a3 },

      /* 802.11 HyperLan 2 */
      { 100, 0x18402ec8, 0x184c06b2, 0x18178a55, 0x180ed783 },
      { 102, 0x18402ec8, 0x184c06b2, 0x18578a55, 0x180ed793 },
      { 104, 0x18402ec8, 0x185c06b2, 0x18578a55, 0x180ed1a3 },
      { 108, 0x18402ecc, 0x185c0a32, 0x18578a55, 0x180ed193 },
      { 110, 0x18402ecc, 0x184c0a36, 0x18178a55, 0x180ed183 },
      { 112, 0x18402ecc, 0x184c0a36, 0x18178a55, 0x180ed19b },
      { 116, 0x18402ecc, 0x184c0a3a, 0x18178a55, 0x180ed1a3 },
      { 118, 0x18402ecc, 0x184c0a3e, 0x18178a55, 0x180ed193 },
      { 120, 0x18402ec4, 0x184c0382, 0x18178a55, 0x180ed183 },
      { 124, 0x18402ec4, 0x184c0382, 0x18178a55, 0x180ed193 },
      { 126, 0x18402ec4, 0x184c0382, 0x18178a55, 0x180ed15b },
      { 128, 0x18402ec4, 0x184c0382, 0x18178a55, 0x180ed1a3 },
      { 132, 0x18402ec4, 0x184c0386, 0x18178a55, 0x180ed18b },
      { 134, 0x18402ec4, 0x184c0386, 0x18178a55, 0x180ed193 },
      { 136, 0x18402ec4, 0x184c0386, 0x18178a55, 0x180ed19b },
      { 140, 0x18402ec4, 0x184c038a, 0x18178a55, 0x180ed183 },

      /* 802.11 UNII */
      { 149, 0x18402ec4, 0x184c038a, 0x18178a55, 0x180ed1a7 },
      { 151, 0x18402ec4, 0x184c038e, 0x18178a55, 0x180ed187 },
      { 153, 0x18402ec4, 0x184c038e, 0x18178a55, 0x180ed18f },
      { 157, 0x18402ec4, 0x184c038e, 0x18178a55, 0x180ed19f },
      { 159, 0x18402ec4, 0x184c038e, 0x18178a55, 0x180ed1a7 },
      { 161, 0x18402ec4, 0x184c0392, 0x18178a55, 0x180ed187 },
      { 165, 0x18402ec4, 0x184c0392, 0x18178a55, 0x180ed197 },
      { 167, 0x18402ec4, 0x184c03d2, 0x18179855, 0x1815531f },
      { 169, 0x18402ec4, 0x184c03d2, 0x18179855, 0x18155327 },
      { 171, 0x18402ec4, 0x184c03d6, 0x18179855, 0x18155307 },
      { 173, 0x18402ec4, 0x184c03d6, 0x18179855, 0x1815530f },

      /* 802.11 Japan */
      { 184, 0x15002ccc, 0x1500491e, 0x1509be55, 0x150c0a0b },
      { 188, 0x15002ccc, 0x15004922, 0x1509be55, 0x150c0a13 },
      { 192, 0x15002ccc, 0x15004926, 0x1509be55, 0x150c0a1b },
      { 196, 0x15002ccc, 0x1500492a, 0x1509be55, 0x150c0a23 },
      { 208, 0x15002ccc, 0x1500493a, 0x1509be55, 0x150c0a13 },
      { 212, 0x15002ccc, 0x1500493e, 0x1509be55, 0x150c0a1b },
      { 216, 0x15002ccc, 0x15004982, 0x1509be55, 0x150c0a23 },
};

/*
 * RF value list for rt3070
 * Supports: 2.4 GHz
 */
static const struct rf_channel rf_vals_3070[] = {
      {1,  241, 2, 2 },
      {2,  241, 2, 7 },
      {3,  242, 2, 2 },
      {4,  242, 2, 7 },
      {5,  243, 2, 2 },
      {6,  243, 2, 7 },
      {7,  244, 2, 2 },
      {8,  244, 2, 7 },
      {9,  245, 2, 2 },
      {10, 245, 2, 7 },
      {11, 246, 2, 2 },
      {12, 246, 2, 7 },
      {13, 247, 2, 2 },
      {14, 248, 2, 4 },
};

static int rt2800usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
{
      struct hw_mode_spec *spec = &rt2x00dev->spec;
      struct channel_info *info;
      char *tx_power1;
      char *tx_power2;
      unsigned int i;
      u16 eeprom;

      /*
       * Initialize all hw fields.
       */
      rt2x00dev->hw->flags =
          IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
          IEEE80211_HW_SIGNAL_DBM |
          IEEE80211_HW_SUPPORTS_PS |
          IEEE80211_HW_PS_NULLFUNC_STACK;
      rt2x00dev->hw->extra_tx_headroom = TXINFO_DESC_SIZE + TXWI_DESC_SIZE;

      SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
      SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
                        rt2x00_eeprom_addr(rt2x00dev,
                                       EEPROM_MAC_ADDR_0));

      rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);

      /*
       * Initialize HT information.
       */
      spec->ht.ht_supported = true;
      spec->ht.cap =
          IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
          IEEE80211_HT_CAP_GRN_FLD |
          IEEE80211_HT_CAP_SGI_20 |
          IEEE80211_HT_CAP_SGI_40 |
          IEEE80211_HT_CAP_TX_STBC |
          IEEE80211_HT_CAP_RX_STBC |
          IEEE80211_HT_CAP_PSMP_SUPPORT;
      spec->ht.ampdu_factor = 3;
      spec->ht.ampdu_density = 4;
      spec->ht.mcs.tx_params =
          IEEE80211_HT_MCS_TX_DEFINED |
          IEEE80211_HT_MCS_TX_RX_DIFF |
          ((rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH) - 1) <<
            IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);

      switch (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH)) {
      case 3:
            spec->ht.mcs.rx_mask[2] = 0xff;
      case 2:
            spec->ht.mcs.rx_mask[1] = 0xff;
      case 1:
            spec->ht.mcs.rx_mask[0] = 0xff;
            spec->ht.mcs.rx_mask[4] = 0x1; /* MCS32 */
            break;
      }

      /*
       * Initialize hw_mode information.
       */
      spec->supported_bands = SUPPORT_BAND_2GHZ;
      spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;

      if (rt2x00_rf(&rt2x00dev->chip, RF2820) ||
          rt2x00_rf(&rt2x00dev->chip, RF2720)) {
            spec->num_channels = 14;
            spec->channels = rf_vals;
      } else if (rt2x00_rf(&rt2x00dev->chip, RF2850) ||
               rt2x00_rf(&rt2x00dev->chip, RF2750)) {
            spec->supported_bands |= SUPPORT_BAND_5GHZ;
            spec->num_channels = ARRAY_SIZE(rf_vals);
            spec->channels = rf_vals;
      } else if (rt2x00_rf(&rt2x00dev->chip, RF3020) ||
               rt2x00_rf(&rt2x00dev->chip, RF2020)) {
            spec->num_channels = ARRAY_SIZE(rf_vals_3070);
            spec->channels = rf_vals_3070;
      }

      /*
       * Create channel information array
       */
      info = kzalloc(spec->num_channels * sizeof(*info), GFP_KERNEL);
      if (!info)
            return -ENOMEM;

      spec->channels_info = info;

      tx_power1 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_BG1);
      tx_power2 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_BG2);

      for (i = 0; i < 14; i++) {
            info[i].tx_power1 = TXPOWER_G_FROM_DEV(tx_power1[i]);
            info[i].tx_power2 = TXPOWER_G_FROM_DEV(tx_power2[i]);
      }

      if (spec->num_channels > 14) {
            tx_power1 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A1);
            tx_power2 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A2);

            for (i = 14; i < spec->num_channels; i++) {
                  info[i].tx_power1 = TXPOWER_A_FROM_DEV(tx_power1[i]);
                  info[i].tx_power2 = TXPOWER_A_FROM_DEV(tx_power2[i]);
            }
      }

      return 0;
}

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

      /*
       * Allocate eeprom data.
       */
      retval = rt2800usb_validate_eeprom(rt2x00dev);
      if (retval)
            return retval;

      retval = rt2800usb_init_eeprom(rt2x00dev);
      if (retval)
            return retval;

      /*
       * Initialize hw specifications.
       */
      retval = rt2800usb_probe_hw_mode(rt2x00dev);
      if (retval)
            return retval;

      /*
       * This device requires firmware.
       */
      __set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
      __set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
      __set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
      if (!modparam_nohwcrypt)
            __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);

      /*
       * Set the rssi offset.
       */
      rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;

      return 0;
}

/*
 * IEEE80211 stack callback functions.
 */
static void rt2800usb_get_tkip_seq(struct ieee80211_hw *hw, u8 hw_key_idx,
                           u32 *iv32, u16 *iv16)
{
      struct rt2x00_dev *rt2x00dev = hw->priv;
      struct mac_iveiv_entry iveiv_entry;
      u32 offset;

      offset = MAC_IVEIV_ENTRY(hw_key_idx);
      rt2x00usb_register_multiread(rt2x00dev, offset,
                              &iveiv_entry, sizeof(iveiv_entry));

      memcpy(&iveiv_entry.iv[0], iv16, sizeof(iv16));
      memcpy(&iveiv_entry.iv[4], iv32, sizeof(iv32));
}

static int rt2800usb_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
      struct rt2x00_dev *rt2x00dev = hw->priv;
      u32 reg;
      bool enabled = (value < IEEE80211_MAX_RTS_THRESHOLD);

      rt2x00usb_register_read(rt2x00dev, TX_RTS_CFG, &reg);
      rt2x00_set_field32(&reg, TX_RTS_CFG_RTS_THRES, value);
      rt2x00usb_register_write(rt2x00dev, TX_RTS_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, CCK_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, CCK_PROT_CFG_RTS_TH_EN, enabled);
      rt2x00usb_register_write(rt2x00dev, CCK_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, OFDM_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, OFDM_PROT_CFG_RTS_TH_EN, enabled);
      rt2x00usb_register_write(rt2x00dev, OFDM_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, MM20_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, MM20_PROT_CFG_RTS_TH_EN, enabled);
      rt2x00usb_register_write(rt2x00dev, MM20_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, MM40_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, MM40_PROT_CFG_RTS_TH_EN, enabled);
      rt2x00usb_register_write(rt2x00dev, MM40_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, GF20_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, GF20_PROT_CFG_RTS_TH_EN, enabled);
      rt2x00usb_register_write(rt2x00dev, GF20_PROT_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, GF40_PROT_CFG, &reg);
      rt2x00_set_field32(&reg, GF40_PROT_CFG_RTS_TH_EN, enabled);
      rt2x00usb_register_write(rt2x00dev, GF40_PROT_CFG, reg);

      return 0;
}

static int rt2800usb_conf_tx(struct ieee80211_hw *hw, u16 queue_idx,
                       const struct ieee80211_tx_queue_params *params)
{
      struct rt2x00_dev *rt2x00dev = hw->priv;
      struct data_queue *queue;
      struct rt2x00_field32 field;
      int retval;
      u32 reg;
      u32 offset;

      /*
       * First pass the configuration through rt2x00lib, that will
       * update the queue settings and validate the input. After that
       * we are free to update the registers based on the value
       * in the queue parameter.
       */
      retval = rt2x00mac_conf_tx(hw, queue_idx, params);
      if (retval)
            return retval;

      /*
       * We only need to perform additional register initialization
       * for WMM queues/
       */
      if (queue_idx >= 4)
            return 0;

      queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);

      /* Update WMM TXOP register */
      offset = WMM_TXOP0_CFG + (sizeof(u32) * (!!(queue_idx & 2)));
      field.bit_offset = (queue_idx & 1) * 16;
      field.bit_mask = 0xffff << field.bit_offset;

      rt2x00usb_register_read(rt2x00dev, offset, &reg);
      rt2x00_set_field32(&reg, field, queue->txop);
      rt2x00usb_register_write(rt2x00dev, offset, reg);

      /* Update WMM registers */
      field.bit_offset = queue_idx * 4;
      field.bit_mask = 0xf << field.bit_offset;

      rt2x00usb_register_read(rt2x00dev, WMM_AIFSN_CFG, &reg);
      rt2x00_set_field32(&reg, field, queue->aifs);
      rt2x00usb_register_write(rt2x00dev, WMM_AIFSN_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, WMM_CWMIN_CFG, &reg);
      rt2x00_set_field32(&reg, field, queue->cw_min);
      rt2x00usb_register_write(rt2x00dev, WMM_CWMIN_CFG, reg);

      rt2x00usb_register_read(rt2x00dev, WMM_CWMAX_CFG, &reg);
      rt2x00_set_field32(&reg, field, queue->cw_max);
      rt2x00usb_register_write(rt2x00dev, WMM_CWMAX_CFG, reg);

      /* Update EDCA registers */
      offset = EDCA_AC0_CFG + (sizeof(u32) * queue_idx);

      rt2x00usb_register_read(rt2x00dev, offset, &reg);
      rt2x00_set_field32(&reg, EDCA_AC0_CFG_TX_OP, queue->txop);
      rt2x00_set_field32(&reg, EDCA_AC0_CFG_AIFSN, queue->aifs);
      rt2x00_set_field32(&reg, EDCA_AC0_CFG_CWMIN, queue->cw_min);
      rt2x00_set_field32(&reg, EDCA_AC0_CFG_CWMAX, queue->cw_max);
      rt2x00usb_register_write(rt2x00dev, offset, reg);

      return 0;
}

static u64 rt2800usb_get_tsf(struct ieee80211_hw *hw)
{
      struct rt2x00_dev *rt2x00dev = hw->priv;
      u64 tsf;
      u32 reg;

      rt2x00usb_register_read(rt2x00dev, TSF_TIMER_DW1, &reg);
      tsf = (u64) rt2x00_get_field32(reg, TSF_TIMER_DW1_HIGH_WORD) << 32;
      rt2x00usb_register_read(rt2x00dev, TSF_TIMER_DW0, &reg);
      tsf |= rt2x00_get_field32(reg, TSF_TIMER_DW0_LOW_WORD);

      return tsf;
}

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_key          = rt2x00mac_set_key,
      .get_stats        = rt2x00mac_get_stats,
      .get_tkip_seq           = rt2800usb_get_tkip_seq,
      .set_rts_threshold      = rt2800usb_set_rts_threshold,
      .bss_info_changed = rt2x00mac_bss_info_changed,
      .conf_tx          = rt2800usb_conf_tx,
      .get_tx_stats           = rt2x00mac_get_tx_stats,
      .get_tsf          = rt2800usb_get_tsf,
};

static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
      .probe_hw         = rt2800usb_probe_hw,
      .get_firmware_name      = rt2800usb_get_firmware_name,
      .check_firmware         = rt2800usb_check_firmware,
      .load_firmware          = rt2800usb_load_firmware,
      .initialize       = rt2x00usb_initialize,
      .uninitialize           = rt2x00usb_uninitialize,
      .clear_entry            = rt2x00usb_clear_entry,
      .set_device_state = rt2800usb_set_device_state,
      .rfkill_poll            = rt2800usb_rfkill_poll,
      .link_stats       = rt2800usb_link_stats,
      .reset_tuner            = rt2800usb_reset_tuner,
      .link_tuner       = rt2800usb_link_tuner,
      .write_tx_desc          = rt2800usb_write_tx_desc,
      .write_tx_data          = rt2x00usb_write_tx_data,
      .write_beacon           = rt2800usb_write_beacon,
      .get_tx_data_len  = rt2800usb_get_tx_data_len,
      .kick_tx_queue          = rt2800usb_kick_tx_queue,
      .kill_tx_queue          = rt2x00usb_kill_tx_queue,
      .fill_rxdone            = rt2800usb_fill_rxdone,
      .config_shared_key      = rt2800usb_config_shared_key,
      .config_pairwise_key    = rt2800usb_config_pairwise_key,
      .config_filter          = rt2800usb_config_filter,
      .config_intf            = rt2800usb_config_intf,
      .config_erp       = rt2800usb_config_erp,
      .config_ant       = rt2800usb_config_ant,
      .config                 = rt2800usb_config,
};

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

static const struct data_queue_desc rt2800usb_queue_tx = {
      .entry_num        = TX_ENTRIES,
      .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 * BEACON_ENTRIES,
      .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,
      .max_sta_intf     = 1,
      .max_ap_intf      = 8,
      .eeprom_size      = EEPROM_SIZE,
      .rf_size    = RF_SIZE,
      .tx_queues  = NUM_TX_QUEUES,
      .rx         = &rt2800usb_queue_rx,
      .tx         = &rt2800usb_queue_tx,
      .bcn        = &rt2800usb_queue_bcn,
      .lib        = &rt2800usb_rt2x00_ops,
      .hw         = &rt2800usb_mac80211_ops,
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
      .debugfs    = &rt2800usb_rt2x00debug,
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
};

/*
 * rt2800usb module information.
 */
static struct usb_device_id rt2800usb_device_table[] = {
      /* Abocom */
      { USB_DEVICE(0x07b8, 0x2870), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07b8, 0x2770), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07b8, 0x3070), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07b8, 0x3071), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07b8, 0x3072), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1482, 0x3c09), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* AirTies */
      { USB_DEVICE(0x1eda, 0x2310), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Amigo */
      { USB_DEVICE(0x0e0b, 0x9031), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0e0b, 0x9041), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Amit */
      { USB_DEVICE(0x15c5, 0x0008), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* ASUS */
      { USB_DEVICE(0x0b05, 0x1731), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0b05, 0x1732), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0b05, 0x1742), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0b05, 0x1760), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0b05, 0x1761), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* AzureWave */
      { USB_DEVICE(0x13d3, 0x3247), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x13d3, 0x3262), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x13d3, 0x3273), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x13d3, 0x3284), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Belkin */
      { USB_DEVICE(0x050d, 0x8053), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x050d, 0x805c), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x050d, 0x815c), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x050d, 0x825a), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Buffalo */
      { USB_DEVICE(0x0411, 0x00e8), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0411, 0x012e), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Conceptronic */
      { USB_DEVICE(0x14b2, 0x3c06), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c07), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c08), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c09), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c11), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c12), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c23), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c25), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c27), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x14b2, 0x3c28), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Corega */
      { USB_DEVICE(0x07aa, 0x002f), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07aa, 0x003c), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07aa, 0x003f), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x18c5, 0x0008), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x18c5, 0x0012), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* D-Link */
      { USB_DEVICE(0x07d1, 0x3c09), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07d1, 0x3c0a), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07d1, 0x3c0b), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07d1, 0x3c0d), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07d1, 0x3c0e), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07d1, 0x3c0f), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07d1, 0x3c11), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x07d1, 0x3c13), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Edimax */
      { USB_DEVICE(0x7392, 0x7711), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x7392, 0x7717), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x7392, 0x7718), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Encore */
      { USB_DEVICE(0x203d, 0x1480), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* EnGenius */
      { USB_DEVICE(0X1740, 0x9701), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1740, 0x9702), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1740, 0x9703), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1740, 0x9705), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1740, 0x9706), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1740, 0x9801), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Gemtek */
      { USB_DEVICE(0x15a9, 0x0010), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Gigabyte */
      { USB_DEVICE(0x1044, 0x800b), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1044, 0x800c), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1044, 0x800d), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Hawking */
      { USB_DEVICE(0x0e66, 0x0001), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0e66, 0x0003), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0e66, 0x0009), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0e66, 0x000b), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* I-O DATA */
      { USB_DEVICE(0x04bb, 0x0945), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* LevelOne */
      { USB_DEVICE(0x1740, 0x0605), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1740, 0x0615), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Linksys */
      { USB_DEVICE(0x1737, 0x0070), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1737, 0x0071), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1737, 0x0077), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Logitec */
      { USB_DEVICE(0x0789, 0x0162), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0789, 0x0163), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0789, 0x0164), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Motorola */
      { USB_DEVICE(0x100d, 0x9031), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x100d, 0x9032), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Ovislink */
      { USB_DEVICE(0x1b75, 0x3072), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Pegatron */
      { USB_DEVICE(0x1d4d, 0x0002), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1d4d, 0x000c), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x1d4d, 0x000e), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Philips */
      { USB_DEVICE(0x0471, 0x200f), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Planex */
      { USB_DEVICE(0x2019, 0xed06), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x2019, 0xab24), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x2019, 0xab25), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Qcom */
      { USB_DEVICE(0x18e8, 0x6259), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Quanta */
      { USB_DEVICE(0x1a32, 0x0304), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Ralink */
      { USB_DEVICE(0x0db0, 0x3820), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0db0, 0x6899), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x148f, 0x2070), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x148f, 0x2770), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x148f, 0x2870), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x148f, 0x3070), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x148f, 0x3071), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x148f, 0x3072), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x148f, 0x3572), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Samsung */
      { USB_DEVICE(0x04e8, 0x2018), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Siemens */
      { USB_DEVICE(0x129b, 0x1828), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Sitecom */
      { USB_DEVICE(0x0df6, 0x0017), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x002b), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x002c), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x002d), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x0039), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x003b), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x003c), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x003d), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x003e), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x003f), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x0040), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0df6, 0x0042), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* SMC */
      { USB_DEVICE(0x083a, 0x6618), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0x7511), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0x7512), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0x7522), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0x8522), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0xa512), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0xa618), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0xb522), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x083a, 0xc522), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Sparklan */
      { USB_DEVICE(0x15a9, 0x0006), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Sweex */
      { USB_DEVICE(0x177f, 0x0153), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x177f, 0x0302), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x177f, 0x0313), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* U-Media*/
      { USB_DEVICE(0x157e, 0x300e), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* ZCOM */
      { USB_DEVICE(0x0cde, 0x0022), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0cde, 0x0025), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Zinwell */
      { USB_DEVICE(0x5a57, 0x0280), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x5a57, 0x0282), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x5a57, 0x0283), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x5a57, 0x5257), USB_DEVICE_DATA(&rt2800usb_ops) },
      /* Zyxel */
      { USB_DEVICE(0x0586, 0x3416), USB_DEVICE_DATA(&rt2800usb_ops) },
      { USB_DEVICE(0x0586, 0x341a), USB_DEVICE_DATA(&rt2800usb_ops) },
      { 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 struct usb_driver rt2800usb_driver = {
      .name       = KBUILD_MODNAME,
      .id_table   = rt2800usb_device_table,
      .probe            = rt2x00usb_probe,
      .disconnect = rt2x00usb_disconnect,
      .suspend    = rt2x00usb_suspend,
      .resume           = rt2x00usb_resume,
};

static int __init rt2800usb_init(void)
{
      return usb_register(&rt2800usb_driver);
}

static void __exit rt2800usb_exit(void)
{
      usb_deregister(&rt2800usb_driver);
}

module_init(rt2800usb_init);
module_exit(rt2800usb_exit);

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