![Christian Lamparter](/assets/img/avatar_default.png)
This patch adds the usbid for TP-Link TL-WN821N v2. Cc: stable@kernel.org Reported-by: Fabian Lenz <lenz_fabian@yahoo.de> Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
936 lines
21 KiB
C
936 lines
21 KiB
C
/*
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* Atheros AR9170 driver
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*
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* USB - frontend
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*
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* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
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* Copyright 2009, Christian Lamparter <chunkeey@web.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, see
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* http://www.gnu.org/licenses/.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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* Copyright (c) 2007-2008 Atheros Communications, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include <linux/etherdevice.h>
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#include <net/mac80211.h>
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#include "ar9170.h"
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#include "cmd.h"
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#include "hw.h"
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#include "usb.h"
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MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
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MODULE_AUTHOR("Christian Lamparter <chunkeey@web.de>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Atheros AR9170 802.11n USB wireless");
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MODULE_FIRMWARE("ar9170.fw");
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MODULE_FIRMWARE("ar9170-1.fw");
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MODULE_FIRMWARE("ar9170-2.fw");
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enum ar9170_requirements {
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AR9170_REQ_FW1_ONLY = 1,
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};
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static struct usb_device_id ar9170_usb_ids[] = {
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/* Atheros 9170 */
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{ USB_DEVICE(0x0cf3, 0x9170) },
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/* Atheros TG121N */
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{ USB_DEVICE(0x0cf3, 0x1001) },
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/* TP-Link TL-WN821N v2 */
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{ USB_DEVICE(0x0cf3, 0x1002) },
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/* Cace Airpcap NX */
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{ USB_DEVICE(0xcace, 0x0300) },
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/* D-Link DWA 160A */
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{ USB_DEVICE(0x07d1, 0x3c10) },
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/* Netgear WNDA3100 */
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{ USB_DEVICE(0x0846, 0x9010) },
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/* Netgear WN111 v2 */
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{ USB_DEVICE(0x0846, 0x9001) },
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/* Zydas ZD1221 */
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{ USB_DEVICE(0x0ace, 0x1221) },
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/* ZyXEL NWD271N */
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{ USB_DEVICE(0x0586, 0x3417) },
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/* Z-Com UB81 BG */
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{ USB_DEVICE(0x0cde, 0x0023) },
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/* Z-Com UB82 ABG */
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{ USB_DEVICE(0x0cde, 0x0026) },
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/* Arcadyan WN7512 */
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{ USB_DEVICE(0x083a, 0xf522) },
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/* Planex GWUS300 */
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{ USB_DEVICE(0x2019, 0x5304) },
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/* IO-Data WNGDNUS2 */
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{ USB_DEVICE(0x04bb, 0x093f) },
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/* AVM FRITZ!WLAN USB Stick N */
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{ USB_DEVICE(0x057C, 0x8401) },
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/* AVM FRITZ!WLAN USB Stick N 2.4 */
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{ USB_DEVICE(0x057C, 0x8402), .driver_info = AR9170_REQ_FW1_ONLY },
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/* terminate */
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{}
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};
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MODULE_DEVICE_TABLE(usb, ar9170_usb_ids);
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static void ar9170_usb_submit_urb(struct ar9170_usb *aru)
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{
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struct urb *urb;
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unsigned long flags;
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int err;
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if (unlikely(!IS_STARTED(&aru->common)))
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return ;
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spin_lock_irqsave(&aru->tx_urb_lock, flags);
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if (aru->tx_submitted_urbs >= AR9170_NUM_TX_URBS) {
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spin_unlock_irqrestore(&aru->tx_urb_lock, flags);
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return ;
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}
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aru->tx_submitted_urbs++;
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urb = usb_get_from_anchor(&aru->tx_pending);
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if (!urb) {
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aru->tx_submitted_urbs--;
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spin_unlock_irqrestore(&aru->tx_urb_lock, flags);
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return ;
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}
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spin_unlock_irqrestore(&aru->tx_urb_lock, flags);
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aru->tx_pending_urbs--;
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usb_anchor_urb(urb, &aru->tx_submitted);
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err = usb_submit_urb(urb, GFP_ATOMIC);
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if (unlikely(err)) {
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if (ar9170_nag_limiter(&aru->common))
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dev_err(&aru->udev->dev, "submit_urb failed (%d).\n",
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err);
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usb_unanchor_urb(urb);
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aru->tx_submitted_urbs--;
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ar9170_tx_callback(&aru->common, urb->context);
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}
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usb_free_urb(urb);
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}
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static void ar9170_usb_tx_urb_complete_frame(struct urb *urb)
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{
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struct sk_buff *skb = urb->context;
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struct ar9170_usb *aru = (struct ar9170_usb *)
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usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
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if (unlikely(!aru)) {
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dev_kfree_skb_irq(skb);
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return ;
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}
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aru->tx_submitted_urbs--;
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ar9170_tx_callback(&aru->common, skb);
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ar9170_usb_submit_urb(aru);
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}
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static void ar9170_usb_tx_urb_complete(struct urb *urb)
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{
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}
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static void ar9170_usb_irq_completed(struct urb *urb)
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{
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struct ar9170_usb *aru = urb->context;
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switch (urb->status) {
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/* everything is fine */
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case 0:
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break;
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/* disconnect */
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case -ENOENT:
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case -ECONNRESET:
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case -ENODEV:
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case -ESHUTDOWN:
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goto free;
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default:
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goto resubmit;
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}
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ar9170_handle_command_response(&aru->common, urb->transfer_buffer,
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urb->actual_length);
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resubmit:
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usb_anchor_urb(urb, &aru->rx_submitted);
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if (usb_submit_urb(urb, GFP_ATOMIC)) {
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usb_unanchor_urb(urb);
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goto free;
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}
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return;
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free:
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usb_buffer_free(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma);
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}
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static void ar9170_usb_rx_completed(struct urb *urb)
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{
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struct sk_buff *skb = urb->context;
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struct ar9170_usb *aru = (struct ar9170_usb *)
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usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
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int err;
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if (!aru)
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goto free;
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switch (urb->status) {
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/* everything is fine */
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case 0:
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break;
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/* disconnect */
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case -ENOENT:
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case -ECONNRESET:
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case -ENODEV:
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case -ESHUTDOWN:
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goto free;
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default:
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goto resubmit;
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}
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skb_put(skb, urb->actual_length);
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ar9170_rx(&aru->common, skb);
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resubmit:
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skb_reset_tail_pointer(skb);
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skb_trim(skb, 0);
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usb_anchor_urb(urb, &aru->rx_submitted);
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err = usb_submit_urb(urb, GFP_ATOMIC);
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if (unlikely(err)) {
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usb_unanchor_urb(urb);
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goto free;
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}
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return ;
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free:
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dev_kfree_skb_irq(skb);
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}
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static int ar9170_usb_prep_rx_urb(struct ar9170_usb *aru,
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struct urb *urb, gfp_t gfp)
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{
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struct sk_buff *skb;
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skb = __dev_alloc_skb(AR9170_MAX_RX_BUFFER_SIZE + 32, gfp);
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if (!skb)
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return -ENOMEM;
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/* reserve some space for mac80211's radiotap */
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skb_reserve(skb, 32);
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usb_fill_bulk_urb(urb, aru->udev,
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usb_rcvbulkpipe(aru->udev, AR9170_EP_RX),
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skb->data, min(skb_tailroom(skb),
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AR9170_MAX_RX_BUFFER_SIZE),
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ar9170_usb_rx_completed, skb);
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return 0;
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}
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static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru)
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{
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struct urb *urb = NULL;
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void *ibuf;
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int err = -ENOMEM;
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/* initialize interrupt endpoint */
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb)
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goto out;
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ibuf = usb_buffer_alloc(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma);
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if (!ibuf)
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goto out;
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usb_fill_int_urb(urb, aru->udev,
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usb_rcvintpipe(aru->udev, AR9170_EP_IRQ), ibuf,
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64, ar9170_usb_irq_completed, aru, 1);
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urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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usb_anchor_urb(urb, &aru->rx_submitted);
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err = usb_submit_urb(urb, GFP_KERNEL);
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if (err) {
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usb_unanchor_urb(urb);
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usb_buffer_free(aru->udev, 64, urb->transfer_buffer,
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urb->transfer_dma);
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}
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out:
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usb_free_urb(urb);
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return err;
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}
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static int ar9170_usb_alloc_rx_bulk_urbs(struct ar9170_usb *aru)
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{
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struct urb *urb;
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int i;
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int err = -EINVAL;
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for (i = 0; i < AR9170_NUM_RX_URBS; i++) {
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err = -ENOMEM;
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb)
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goto err_out;
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err = ar9170_usb_prep_rx_urb(aru, urb, GFP_KERNEL);
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if (err) {
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usb_free_urb(urb);
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goto err_out;
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}
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usb_anchor_urb(urb, &aru->rx_submitted);
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err = usb_submit_urb(urb, GFP_KERNEL);
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if (err) {
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usb_unanchor_urb(urb);
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dev_kfree_skb_any((void *) urb->transfer_buffer);
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usb_free_urb(urb);
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goto err_out;
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}
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usb_free_urb(urb);
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}
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/* the device now waiting for a firmware. */
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aru->common.state = AR9170_IDLE;
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return 0;
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err_out:
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usb_kill_anchored_urbs(&aru->rx_submitted);
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return err;
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}
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static int ar9170_usb_flush(struct ar9170 *ar)
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{
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struct ar9170_usb *aru = (void *) ar;
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struct urb *urb;
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int ret, err = 0;
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if (IS_STARTED(ar))
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aru->common.state = AR9170_IDLE;
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usb_wait_anchor_empty_timeout(&aru->tx_pending,
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msecs_to_jiffies(800));
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while ((urb = usb_get_from_anchor(&aru->tx_pending))) {
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ar9170_tx_callback(&aru->common, (void *) urb->context);
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usb_free_urb(urb);
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}
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/* lets wait a while until the tx - queues are dried out */
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ret = usb_wait_anchor_empty_timeout(&aru->tx_submitted,
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msecs_to_jiffies(100));
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if (ret == 0)
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err = -ETIMEDOUT;
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usb_kill_anchored_urbs(&aru->tx_submitted);
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if (IS_ACCEPTING_CMD(ar))
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aru->common.state = AR9170_STARTED;
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return err;
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}
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static void ar9170_usb_cancel_urbs(struct ar9170_usb *aru)
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{
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int err;
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aru->common.state = AR9170_UNKNOWN_STATE;
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err = ar9170_usb_flush(&aru->common);
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if (err)
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dev_err(&aru->udev->dev, "stuck tx urbs!\n");
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usb_poison_anchored_urbs(&aru->tx_submitted);
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usb_poison_anchored_urbs(&aru->rx_submitted);
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}
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static int ar9170_usb_exec_cmd(struct ar9170 *ar, enum ar9170_cmd cmd,
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unsigned int plen, void *payload,
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unsigned int outlen, void *out)
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{
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struct ar9170_usb *aru = (void *) ar;
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struct urb *urb = NULL;
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unsigned long flags;
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int err = -ENOMEM;
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if (unlikely(!IS_ACCEPTING_CMD(ar)))
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return -EPERM;
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if (WARN_ON(plen > AR9170_MAX_CMD_LEN - 4))
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return -EINVAL;
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urb = usb_alloc_urb(0, GFP_ATOMIC);
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if (unlikely(!urb))
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goto err_free;
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ar->cmdbuf[0] = cpu_to_le32(plen);
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ar->cmdbuf[0] |= cpu_to_le32(cmd << 8);
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/* writing multiple regs fills this buffer already */
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if (plen && payload != (u8 *)(&ar->cmdbuf[1]))
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memcpy(&ar->cmdbuf[1], payload, plen);
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spin_lock_irqsave(&aru->common.cmdlock, flags);
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aru->readbuf = (u8 *)out;
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aru->readlen = outlen;
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spin_unlock_irqrestore(&aru->common.cmdlock, flags);
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usb_fill_int_urb(urb, aru->udev,
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usb_sndbulkpipe(aru->udev, AR9170_EP_CMD),
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aru->common.cmdbuf, plen + 4,
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ar9170_usb_tx_urb_complete, NULL, 1);
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usb_anchor_urb(urb, &aru->tx_submitted);
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err = usb_submit_urb(urb, GFP_ATOMIC);
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if (unlikely(err)) {
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usb_unanchor_urb(urb);
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usb_free_urb(urb);
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goto err_unbuf;
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}
|
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usb_free_urb(urb);
|
|
|
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err = wait_for_completion_timeout(&aru->cmd_wait, HZ);
|
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if (err == 0) {
|
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err = -ETIMEDOUT;
|
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goto err_unbuf;
|
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}
|
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|
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if (aru->readlen != outlen) {
|
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err = -EMSGSIZE;
|
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goto err_unbuf;
|
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}
|
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|
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return 0;
|
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|
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err_unbuf:
|
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/* Maybe the device was removed in the second we were waiting? */
|
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if (IS_STARTED(ar)) {
|
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dev_err(&aru->udev->dev, "no command feedback "
|
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"received (%d).\n", err);
|
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|
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/* provide some maybe useful debug information */
|
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print_hex_dump_bytes("ar9170 cmd: ", DUMP_PREFIX_NONE,
|
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aru->common.cmdbuf, plen + 4);
|
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dump_stack();
|
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}
|
|
|
|
/* invalidate to avoid completing the next prematurely */
|
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spin_lock_irqsave(&aru->common.cmdlock, flags);
|
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aru->readbuf = NULL;
|
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aru->readlen = 0;
|
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spin_unlock_irqrestore(&aru->common.cmdlock, flags);
|
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|
|
err_free:
|
|
|
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return err;
|
|
}
|
|
|
|
static int ar9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb)
|
|
{
|
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struct ar9170_usb *aru = (struct ar9170_usb *) ar;
|
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struct urb *urb;
|
|
|
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if (unlikely(!IS_STARTED(ar))) {
|
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/* Seriously, what were you drink... err... thinking!? */
|
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return -EPERM;
|
|
}
|
|
|
|
urb = usb_alloc_urb(0, GFP_ATOMIC);
|
|
if (unlikely(!urb))
|
|
return -ENOMEM;
|
|
|
|
usb_fill_bulk_urb(urb, aru->udev,
|
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usb_sndbulkpipe(aru->udev, AR9170_EP_TX),
|
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skb->data, skb->len,
|
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ar9170_usb_tx_urb_complete_frame, skb);
|
|
urb->transfer_flags |= URB_ZERO_PACKET;
|
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|
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usb_anchor_urb(urb, &aru->tx_pending);
|
|
aru->tx_pending_urbs++;
|
|
|
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usb_free_urb(urb);
|
|
|
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ar9170_usb_submit_urb(aru);
|
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return 0;
|
|
}
|
|
|
|
static void ar9170_usb_callback_cmd(struct ar9170 *ar, u32 len , void *buffer)
|
|
{
|
|
struct ar9170_usb *aru = (void *) ar;
|
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unsigned long flags;
|
|
u32 in, out;
|
|
|
|
if (unlikely(!buffer))
|
|
return ;
|
|
|
|
in = le32_to_cpup((__le32 *)buffer);
|
|
out = le32_to_cpu(ar->cmdbuf[0]);
|
|
|
|
/* mask off length byte */
|
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out &= ~0xFF;
|
|
|
|
if (aru->readlen >= 0) {
|
|
/* add expected length */
|
|
out |= aru->readlen;
|
|
} else {
|
|
/* add obtained length */
|
|
out |= in & 0xFF;
|
|
}
|
|
|
|
/*
|
|
* Some commands (e.g: AR9170_CMD_FREQUENCY) have a variable response
|
|
* length and we cannot predict the correct length in advance.
|
|
* So we only check if we provided enough space for the data.
|
|
*/
|
|
if (unlikely(out < in)) {
|
|
dev_warn(&aru->udev->dev, "received invalid command response "
|
|
"got %d bytes, instead of %d bytes "
|
|
"and the resp length is %d bytes\n",
|
|
in, out, len);
|
|
print_hex_dump_bytes("ar9170 invalid resp: ",
|
|
DUMP_PREFIX_OFFSET, buffer, len);
|
|
/*
|
|
* Do not complete, then the command times out,
|
|
* and we get a stack trace from there.
|
|
*/
|
|
return ;
|
|
}
|
|
|
|
spin_lock_irqsave(&aru->common.cmdlock, flags);
|
|
if (aru->readbuf && len > 0) {
|
|
memcpy(aru->readbuf, buffer + 4, len - 4);
|
|
aru->readbuf = NULL;
|
|
}
|
|
complete(&aru->cmd_wait);
|
|
spin_unlock_irqrestore(&aru->common.cmdlock, flags);
|
|
}
|
|
|
|
static int ar9170_usb_upload(struct ar9170_usb *aru, const void *data,
|
|
size_t len, u32 addr, bool complete)
|
|
{
|
|
int transfer, err;
|
|
u8 *buf = kmalloc(4096, GFP_KERNEL);
|
|
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
while (len) {
|
|
transfer = min_t(int, len, 4096);
|
|
memcpy(buf, data, transfer);
|
|
|
|
err = usb_control_msg(aru->udev, usb_sndctrlpipe(aru->udev, 0),
|
|
0x30 /* FW DL */, 0x40 | USB_DIR_OUT,
|
|
addr >> 8, 0, buf, transfer, 1000);
|
|
|
|
if (err < 0) {
|
|
kfree(buf);
|
|
return err;
|
|
}
|
|
|
|
len -= transfer;
|
|
data += transfer;
|
|
addr += transfer;
|
|
}
|
|
kfree(buf);
|
|
|
|
if (complete) {
|
|
err = usb_control_msg(aru->udev, usb_sndctrlpipe(aru->udev, 0),
|
|
0x31 /* FW DL COMPLETE */,
|
|
0x40 | USB_DIR_OUT, 0, 0, NULL, 0, 5000);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ar9170_usb_request_firmware(struct ar9170_usb *aru)
|
|
{
|
|
int err = 0;
|
|
|
|
err = request_firmware(&aru->firmware, "ar9170.fw",
|
|
&aru->udev->dev);
|
|
if (!err) {
|
|
aru->init_values = NULL;
|
|
return 0;
|
|
}
|
|
|
|
if (aru->req_one_stage_fw) {
|
|
dev_err(&aru->udev->dev, "ar9170.fw firmware file "
|
|
"not found and is required for this device\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_err(&aru->udev->dev, "ar9170.fw firmware file "
|
|
"not found, trying old firmware...\n");
|
|
|
|
err = request_firmware(&aru->init_values, "ar9170-1.fw",
|
|
&aru->udev->dev);
|
|
if (err) {
|
|
dev_err(&aru->udev->dev, "file with init values not found.\n");
|
|
return err;
|
|
}
|
|
|
|
err = request_firmware(&aru->firmware, "ar9170-2.fw", &aru->udev->dev);
|
|
if (err) {
|
|
release_firmware(aru->init_values);
|
|
dev_err(&aru->udev->dev, "firmware file not found.\n");
|
|
return err;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int ar9170_usb_reset(struct ar9170_usb *aru)
|
|
{
|
|
int ret, lock = (aru->intf->condition != USB_INTERFACE_BINDING);
|
|
|
|
if (lock) {
|
|
ret = usb_lock_device_for_reset(aru->udev, aru->intf);
|
|
if (ret < 0) {
|
|
dev_err(&aru->udev->dev, "unable to lock device "
|
|
"for reset (%d).\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = usb_reset_device(aru->udev);
|
|
if (lock)
|
|
usb_unlock_device(aru->udev);
|
|
|
|
/* let it rest - for a second - */
|
|
msleep(1000);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ar9170_usb_upload_firmware(struct ar9170_usb *aru)
|
|
{
|
|
int err;
|
|
|
|
if (!aru->init_values)
|
|
goto upload_fw_start;
|
|
|
|
/* First, upload initial values to device RAM */
|
|
err = ar9170_usb_upload(aru, aru->init_values->data,
|
|
aru->init_values->size, 0x102800, false);
|
|
if (err) {
|
|
dev_err(&aru->udev->dev, "firmware part 1 "
|
|
"upload failed (%d).\n", err);
|
|
return err;
|
|
}
|
|
|
|
upload_fw_start:
|
|
|
|
/* Then, upload the firmware itself and start it */
|
|
return ar9170_usb_upload(aru, aru->firmware->data, aru->firmware->size,
|
|
0x200000, true);
|
|
}
|
|
|
|
static int ar9170_usb_init_transport(struct ar9170_usb *aru)
|
|
{
|
|
struct ar9170 *ar = (void *) &aru->common;
|
|
int err;
|
|
|
|
ar9170_regwrite_begin(ar);
|
|
|
|
/* Set USB Rx stream mode MAX packet number to 2 */
|
|
ar9170_regwrite(AR9170_USB_REG_MAX_AGG_UPLOAD, 0x4);
|
|
|
|
/* Set USB Rx stream mode timeout to 10us */
|
|
ar9170_regwrite(AR9170_USB_REG_UPLOAD_TIME_CTL, 0x80);
|
|
|
|
ar9170_regwrite_finish();
|
|
|
|
err = ar9170_regwrite_result();
|
|
if (err)
|
|
dev_err(&aru->udev->dev, "USB setup failed (%d).\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void ar9170_usb_stop(struct ar9170 *ar)
|
|
{
|
|
struct ar9170_usb *aru = (void *) ar;
|
|
int ret;
|
|
|
|
if (IS_ACCEPTING_CMD(ar))
|
|
aru->common.state = AR9170_STOPPED;
|
|
|
|
ret = ar9170_usb_flush(ar);
|
|
if (ret)
|
|
dev_err(&aru->udev->dev, "kill pending tx urbs.\n");
|
|
|
|
usb_poison_anchored_urbs(&aru->tx_submitted);
|
|
|
|
/*
|
|
* Note:
|
|
* So far we freed all tx urbs, but we won't dare to touch any rx urbs.
|
|
* Else we would end up with a unresponsive device...
|
|
*/
|
|
}
|
|
|
|
static int ar9170_usb_open(struct ar9170 *ar)
|
|
{
|
|
struct ar9170_usb *aru = (void *) ar;
|
|
int err;
|
|
|
|
usb_unpoison_anchored_urbs(&aru->tx_submitted);
|
|
err = ar9170_usb_init_transport(aru);
|
|
if (err) {
|
|
usb_poison_anchored_urbs(&aru->tx_submitted);
|
|
return err;
|
|
}
|
|
|
|
aru->common.state = AR9170_IDLE;
|
|
return 0;
|
|
}
|
|
|
|
static int ar9170_usb_init_device(struct ar9170_usb *aru)
|
|
{
|
|
int err;
|
|
|
|
err = ar9170_usb_alloc_rx_irq_urb(aru);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
err = ar9170_usb_alloc_rx_bulk_urbs(aru);
|
|
if (err)
|
|
goto err_unrx;
|
|
|
|
err = ar9170_usb_upload_firmware(aru);
|
|
if (err) {
|
|
err = ar9170_echo_test(&aru->common, 0x60d43110);
|
|
if (err) {
|
|
/* force user invention, by disabling the device */
|
|
err = usb_driver_set_configuration(aru->udev, -1);
|
|
dev_err(&aru->udev->dev, "device is in a bad state. "
|
|
"please reconnect it!\n");
|
|
goto err_unrx;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_unrx:
|
|
ar9170_usb_cancel_urbs(aru);
|
|
|
|
err_out:
|
|
return err;
|
|
}
|
|
|
|
static bool ar9170_requires_one_stage(const struct usb_device_id *id)
|
|
{
|
|
if (!id->driver_info)
|
|
return false;
|
|
if (id->driver_info == AR9170_REQ_FW1_ONLY)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static int ar9170_usb_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct ar9170_usb *aru;
|
|
struct ar9170 *ar;
|
|
struct usb_device *udev;
|
|
int err;
|
|
|
|
aru = ar9170_alloc(sizeof(*aru));
|
|
if (IS_ERR(aru)) {
|
|
err = PTR_ERR(aru);
|
|
goto out;
|
|
}
|
|
|
|
udev = interface_to_usbdev(intf);
|
|
usb_get_dev(udev);
|
|
aru->udev = udev;
|
|
aru->intf = intf;
|
|
ar = &aru->common;
|
|
|
|
aru->req_one_stage_fw = ar9170_requires_one_stage(id);
|
|
|
|
usb_set_intfdata(intf, aru);
|
|
SET_IEEE80211_DEV(ar->hw, &intf->dev);
|
|
|
|
init_usb_anchor(&aru->rx_submitted);
|
|
init_usb_anchor(&aru->tx_pending);
|
|
init_usb_anchor(&aru->tx_submitted);
|
|
init_completion(&aru->cmd_wait);
|
|
spin_lock_init(&aru->tx_urb_lock);
|
|
|
|
aru->tx_pending_urbs = 0;
|
|
aru->tx_submitted_urbs = 0;
|
|
|
|
aru->common.stop = ar9170_usb_stop;
|
|
aru->common.flush = ar9170_usb_flush;
|
|
aru->common.open = ar9170_usb_open;
|
|
aru->common.tx = ar9170_usb_tx;
|
|
aru->common.exec_cmd = ar9170_usb_exec_cmd;
|
|
aru->common.callback_cmd = ar9170_usb_callback_cmd;
|
|
|
|
#ifdef CONFIG_PM
|
|
udev->reset_resume = 1;
|
|
#endif /* CONFIG_PM */
|
|
err = ar9170_usb_reset(aru);
|
|
if (err)
|
|
goto err_freehw;
|
|
|
|
err = ar9170_usb_request_firmware(aru);
|
|
if (err)
|
|
goto err_freehw;
|
|
|
|
err = ar9170_usb_init_device(aru);
|
|
if (err)
|
|
goto err_freefw;
|
|
|
|
err = ar9170_usb_open(ar);
|
|
if (err)
|
|
goto err_unrx;
|
|
|
|
err = ar9170_register(ar, &udev->dev);
|
|
|
|
ar9170_usb_stop(ar);
|
|
if (err)
|
|
goto err_unrx;
|
|
|
|
return 0;
|
|
|
|
err_unrx:
|
|
ar9170_usb_cancel_urbs(aru);
|
|
|
|
err_freefw:
|
|
release_firmware(aru->init_values);
|
|
release_firmware(aru->firmware);
|
|
|
|
err_freehw:
|
|
usb_set_intfdata(intf, NULL);
|
|
usb_put_dev(udev);
|
|
ieee80211_free_hw(ar->hw);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void ar9170_usb_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct ar9170_usb *aru = usb_get_intfdata(intf);
|
|
|
|
if (!aru)
|
|
return;
|
|
|
|
aru->common.state = AR9170_IDLE;
|
|
ar9170_unregister(&aru->common);
|
|
ar9170_usb_cancel_urbs(aru);
|
|
|
|
release_firmware(aru->init_values);
|
|
release_firmware(aru->firmware);
|
|
|
|
usb_put_dev(aru->udev);
|
|
usb_set_intfdata(intf, NULL);
|
|
ieee80211_free_hw(aru->common.hw);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ar9170_suspend(struct usb_interface *intf,
|
|
pm_message_t message)
|
|
{
|
|
struct ar9170_usb *aru = usb_get_intfdata(intf);
|
|
|
|
if (!aru)
|
|
return -ENODEV;
|
|
|
|
aru->common.state = AR9170_IDLE;
|
|
ar9170_usb_cancel_urbs(aru);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ar9170_resume(struct usb_interface *intf)
|
|
{
|
|
struct ar9170_usb *aru = usb_get_intfdata(intf);
|
|
int err;
|
|
|
|
if (!aru)
|
|
return -ENODEV;
|
|
|
|
usb_unpoison_anchored_urbs(&aru->rx_submitted);
|
|
usb_unpoison_anchored_urbs(&aru->tx_submitted);
|
|
|
|
err = ar9170_usb_init_device(aru);
|
|
if (err)
|
|
goto err_unrx;
|
|
|
|
err = ar9170_usb_open(&aru->common);
|
|
if (err)
|
|
goto err_unrx;
|
|
|
|
return 0;
|
|
|
|
err_unrx:
|
|
aru->common.state = AR9170_IDLE;
|
|
ar9170_usb_cancel_urbs(aru);
|
|
|
|
return err;
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct usb_driver ar9170_driver = {
|
|
.name = "ar9170usb",
|
|
.probe = ar9170_usb_probe,
|
|
.disconnect = ar9170_usb_disconnect,
|
|
.id_table = ar9170_usb_ids,
|
|
.soft_unbind = 1,
|
|
#ifdef CONFIG_PM
|
|
.suspend = ar9170_suspend,
|
|
.resume = ar9170_resume,
|
|
.reset_resume = ar9170_resume,
|
|
#endif /* CONFIG_PM */
|
|
};
|
|
|
|
static int __init ar9170_init(void)
|
|
{
|
|
return usb_register(&ar9170_driver);
|
|
}
|
|
|
|
static void __exit ar9170_exit(void)
|
|
{
|
|
usb_deregister(&ar9170_driver);
|
|
}
|
|
|
|
module_init(ar9170_init);
|
|
module_exit(ar9170_exit);
|