path: root/drivers/net/wireless/ath/ar9170/usb.c

/*
 * Atheros AR9170 driver
 *
 * USB - frontend
 *
 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2009, Christian Lamparter <chunkeey@web.de>
 *
 * 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; see the file COPYING.  If not, see
 * http://www.gnu.org/licenses/.
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *    Copyright (c) 2007-2008 Atheros Communications, Inc.
 *
 *    Permission to use, copy, modify, and/or distribute this software for any
 *    purpose with or without fee is hereby granted, provided that the above
 *    copyright notice and this permission notice appear in all copies.
 *
 *    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 *    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 *    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <linux/device.h>
#include <net/mac80211.h>
#include "ar9170.h"
#include "cmd.h"
#include "hw.h"
#include "usb.h"

MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
MODULE_AUTHOR("Christian Lamparter <chunkeey@web.de>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Atheros AR9170 802.11n USB wireless");
MODULE_FIRMWARE("ar9170.fw");

enum ar9170_requirements {
	AR9170_REQ_FW1_ONLY = 1,
};

static struct usb_device_id ar9170_usb_ids[] = {
	/* Atheros 9170 */
	{ USB_DEVICE(0x0cf3, 0x9170) },
	/* Atheros TG121N */
	{ USB_DEVICE(0x0cf3, 0x1001) },
	/* TP-Link TL-WN821N v2 */
	{ USB_DEVICE(0x0cf3, 0x1002) },
	/* 3Com Dual Band 802.11n USB Adapter */
	{ USB_DEVICE(0x0cf3, 0x1010) },
	/* H3C Dual Band 802.11n USB Adapter */
	{ USB_DEVICE(0x0cf3, 0x1011) },
	/* Cace Airpcap NX */
	{ USB_DEVICE(0xcace, 0x0300) },
	/* D-Link DWA 160 A1 */
	{ USB_DEVICE(0x07d1, 0x3c10) },
	/* D-Link DWA 160 A2 */
	{ USB_DEVICE(0x07d1, 0x3a09) },
	/* Netgear WNA1000 */
	{ USB_DEVICE(0x0846, 0x9040) },
	/* Netgear WNDA3100 */
	{ USB_DEVICE(0x0846, 0x9010) },
	/* Netgear WN111 v2 */
	{ USB_DEVICE(0x0846, 0x9001) },
	/* Zydas ZD1221 */
	{ USB_DEVICE(0x0ace, 0x1221) },
	/* Proxim ORiNOCO 802.11n USB */
	{ USB_DEVICE(0x1435, 0x0804) },
	/* WNC Generic 11n USB Dongle */
	{ USB_DEVICE(0x1435, 0x0326) },
	/* ZyXEL NWD271N */
	{ USB_DEVICE(0x0586, 0x3417) },
	/* Z-Com UB81 BG */
	{ USB_DEVICE(0x0cde, 0x0023) },
	/* Z-Com UB82 ABG */
	{ USB_DEVICE(0x0cde, 0x0026) },
	/* Sphairon Homelink 1202 */
	{ USB_DEVICE(0x0cde, 0x0027) },
	/* Arcadyan WN7512 */
	{ USB_DEVICE(0x083a, 0xf522) },
	/* Planex GWUS300 */
	{ USB_DEVICE(0x2019, 0x5304) },
	/* IO-Data WNGDNUS2 */
	{ USB_DEVICE(0x04bb, 0x093f) },
	/* AVM FRITZ!WLAN USB Stick N */
	{ USB_DEVICE(0x057C, 0x8401) },
	/* NEC WL300NU-G */
	{ USB_DEVICE(0x0409, 0x0249) },
	/* AVM FRITZ!WLAN USB Stick N 2.4 */
	{ USB_DEVICE(0x057C, 0x8402), .driver_info = AR9170_REQ_FW1_ONLY },
	/* Qwest/Actiontec 802AIN Wireless N USB Network Adapter */
	{ USB_DEVICE(0x1668, 0x1200) },

	/* terminate */
	{}
};
MODULE_DEVICE_TABLE(usb, ar9170_usb_ids);

static void ar9170_usb_submit_urb(struct ar9170_usb *aru)
{
	struct urb *urb;
	unsigned long flags;
	int err;

	if (unlikely(!IS_STARTED(&aru->common)))
		return ;

	spin_lock_irqsave(&aru->tx_urb_lock, flags);
	if (atomic_read(&aru->tx_submitted_urbs) >= AR9170_NUM_TX_URBS) {
		spin_unlock_irqrestore(&aru->tx_urb_lock, flags);
		return ;
	}
	atomic_inc(&aru->tx_submitted_urbs);

	urb = usb_get_from_anchor(&aru->tx_pending);
	if (!urb) {
		atomic_dec(&aru->tx_submitted_urbs);
		spin_unlock_irqrestore(&aru->tx_urb_lock, flags);

		return ;
	}
	spin_unlock_irqrestore(&aru->tx_urb_lock, flags);

	aru->tx_pending_urbs--;
	usb_anchor_urb(urb, &aru->tx_submitted);

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (unlikely(err)) {
		if (ar9170_nag_limiter(&aru->common))
			dev_err(&aru->udev->dev, "submit_urb failed (%d).\n",
				err);

		usb_unanchor_urb(urb);
		atomic_dec(&aru->tx_submitted_urbs);
		ar9170_tx_callback(&aru->common, urb->context