2 * Atheros CARL9170 driver
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; see the file COPYING. If not, see
21 * http://www.gnu.org/licenses/.
23 * This file incorporates work covered by the following copyright and
25 * Copyright (c) 2007-2008 Atheros Communications, Inc.
27 * Permission to use, copy, modify, and/or distribute this software for any
28 * purpose with or without fee is hereby granted, provided that the above
29 * copyright notice and this permission notice appear in all copies.
31 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
32 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
33 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
34 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
35 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
36 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
37 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
40 #include <linux/module.h>
41 #include <linux/slab.h>
42 #include <linux/usb.h>
43 #include <linux/firmware.h>
44 #include <linux/etherdevice.h>
45 #include <linux/device.h>
46 #include <net/mac80211.h>
52 MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
53 MODULE_AUTHOR("Christian Lamparter <chunkeey@googlemail.com>");
54 MODULE_LICENSE("GPL");
55 MODULE_DESCRIPTION("Atheros AR9170 802.11n USB wireless");
56 MODULE_FIRMWARE(CARL9170FW_NAME);
57 MODULE_ALIAS("ar9170usb");
58 MODULE_ALIAS("arusb_lnx");
63 * Always update our wiki's device list (located at:
64 * http://wireless.kernel.org/en/users/Drivers/ar9170/devices ),
65 * whenever you add a new device.
67 static struct usb_device_id carl9170_usb_ids[] = {
69 { USB_DEVICE(0x0cf3, 0x9170) },
71 { USB_DEVICE(0x0cf3, 0x1001) },
72 /* TP-Link TL-WN821N v2 */
73 { USB_DEVICE(0x0cf3, 0x1002), .driver_info = CARL9170_WPS_BUTTON |
75 /* 3Com Dual Band 802.11n USB Adapter */
76 { USB_DEVICE(0x0cf3, 0x1010) },
77 /* H3C Dual Band 802.11n USB Adapter */
78 { USB_DEVICE(0x0cf3, 0x1011) },
80 { USB_DEVICE(0xcace, 0x0300) },
81 /* D-Link DWA 160 A1 */
82 { USB_DEVICE(0x07d1, 0x3c10) },
83 /* D-Link DWA 160 A2 */
84 { USB_DEVICE(0x07d1, 0x3a09) },
85 /* D-Link DWA 130 D */
86 { USB_DEVICE(0x07d1, 0x3a0f) },
88 { USB_DEVICE(0x0846, 0x9040) },
89 /* Netgear WNDA3100 (v1) */
90 { USB_DEVICE(0x0846, 0x9010) },
91 /* Netgear WN111 v2 */
92 { USB_DEVICE(0x0846, 0x9001), .driver_info = CARL9170_ONE_LED },
94 { USB_DEVICE(0x0ace, 0x1221) },
95 /* Proxim ORiNOCO 802.11n USB */
96 { USB_DEVICE(0x1435, 0x0804) },
97 /* WNC Generic 11n USB Dongle */
98 { USB_DEVICE(0x1435, 0x0326) },
100 { USB_DEVICE(0x0586, 0x3417) },
102 { USB_DEVICE(0x0cde, 0x0023) },
104 { USB_DEVICE(0x0cde, 0x0026) },
105 /* Sphairon Homelink 1202 */
106 { USB_DEVICE(0x0cde, 0x0027) },
107 /* Arcadyan WN7512 */
108 { USB_DEVICE(0x083a, 0xf522) },
110 { USB_DEVICE(0x2019, 0x5304) },
111 /* IO-Data WNGDNUS2 */
112 { USB_DEVICE(0x04bb, 0x093f) },
114 { USB_DEVICE(0x0409, 0x0249) },
115 /* AVM FRITZ!WLAN USB Stick N */
116 { USB_DEVICE(0x057c, 0x8401) },
117 /* AVM FRITZ!WLAN USB Stick N 2.4 */
118 { USB_DEVICE(0x057c, 0x8402) },
119 /* Qwest/Actiontec 802AIN Wireless N USB Network Adapter */
120 { USB_DEVICE(0x1668, 0x1200) },
125 MODULE_DEVICE_TABLE(usb, carl9170_usb_ids);
127 static void carl9170_usb_submit_data_urb(struct ar9170 *ar)
132 if (atomic_inc_return(&ar->tx_anch_urbs) > AR9170_NUM_TX_URBS)
135 urb = usb_get_from_anchor(&ar->tx_wait);
139 usb_anchor_urb(urb, &ar->tx_anch);
141 err = usb_submit_urb(urb, GFP_ATOMIC);
143 if (net_ratelimit()) {
144 dev_err(&ar->udev->dev, "tx submit failed (%d)\n",
148 usb_unanchor_urb(urb);
149 usb_anchor_urb(urb, &ar->tx_err);
154 if (likely(err == 0))
158 atomic_dec(&ar->tx_anch_urbs);
161 static void carl9170_usb_tx_data_complete(struct urb *urb)
163 struct ar9170 *ar = (struct ar9170 *)
164 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
166 if (WARN_ON_ONCE(!ar)) {
167 dev_kfree_skb_irq(urb->context);
171 atomic_dec(&ar->tx_anch_urbs);
173 switch (urb->status) {
174 /* everything is fine */
176 carl9170_tx_callback(ar, (void *)urb->context);
185 * Defer the frame clean-up to the tasklet worker.
186 * This is necessary, because carl9170_tx_drop
187 * does not work in an irqsave context.
189 usb_anchor_urb(urb, &ar->tx_err);
192 /* a random transmission error has occurred? */
194 if (net_ratelimit()) {
195 dev_err(&ar->udev->dev, "tx failed (%d)\n",
199 usb_anchor_urb(urb, &ar->tx_err);
203 if (likely(IS_STARTED(ar)))
204 carl9170_usb_submit_data_urb(ar);
207 static int carl9170_usb_submit_cmd_urb(struct ar9170 *ar)
212 if (atomic_inc_return(&ar->tx_cmd_urbs) != 1) {
213 atomic_dec(&ar->tx_cmd_urbs);
217 urb = usb_get_from_anchor(&ar->tx_cmd);
219 atomic_dec(&ar->tx_cmd_urbs);
223 usb_anchor_urb(urb, &ar->tx_anch);
224 err = usb_submit_urb(urb, GFP_ATOMIC);
226 usb_unanchor_urb(urb);
227 atomic_dec(&ar->tx_cmd_urbs);
234 static void carl9170_usb_cmd_complete(struct urb *urb)
236 struct ar9170 *ar = urb->context;
239 if (WARN_ON_ONCE(!ar))
242 atomic_dec(&ar->tx_cmd_urbs);
244 switch (urb->status) {
245 /* everything is fine */
261 if (!IS_INITIALIZED(ar))
265 dev_err(&ar->udev->dev, "submit cmd cb failed (%d).\n", err);
267 err = carl9170_usb_submit_cmd_urb(ar);
269 dev_err(&ar->udev->dev, "submit cmd failed (%d).\n", err);
272 static void carl9170_usb_rx_irq_complete(struct urb *urb)
274 struct ar9170 *ar = urb->context;
276 if (WARN_ON_ONCE(!ar))
279 switch (urb->status) {
280 /* everything is fine */
295 carl9170_handle_command_response(ar, urb->transfer_buffer,
299 usb_anchor_urb(urb, &ar->rx_anch);
300 if (unlikely(usb_submit_urb(urb, GFP_ATOMIC)))
301 usb_unanchor_urb(urb);
304 static int carl9170_usb_submit_rx_urb(struct ar9170 *ar, gfp_t gfp)
307 int err = 0, runs = 0;
309 while ((atomic_read(&ar->rx_anch_urbs) < AR9170_NUM_RX_URBS) &&
310 (runs++ < AR9170_NUM_RX_URBS)) {
312 urb = usb_get_from_anchor(&ar->rx_pool);
314 usb_anchor_urb(urb, &ar->rx_anch);
315 err = usb_submit_urb(urb, gfp);
317 usb_unanchor_urb(urb);
318 usb_anchor_urb(urb, &ar->rx_pool);
320 atomic_dec(&ar->rx_pool_urbs);
321 atomic_inc(&ar->rx_anch_urbs);
330 static void carl9170_usb_rx_work(struct ar9170 *ar)
335 for (i = 0; i < AR9170_NUM_RX_URBS_POOL; i++) {
336 urb = usb_get_from_anchor(&ar->rx_work);
340 atomic_dec(&ar->rx_work_urbs);
341 if (IS_INITIALIZED(ar)) {
342 carl9170_rx(ar, urb->transfer_buffer,
346 usb_anchor_urb(urb, &ar->rx_pool);
347 atomic_inc(&ar->rx_pool_urbs);
351 carl9170_usb_submit_rx_urb(ar, GFP_ATOMIC);
355 void carl9170_usb_handle_tx_err(struct ar9170 *ar)
359 while ((urb = usb_get_from_anchor(&ar->tx_err))) {
360 struct sk_buff *skb = (void *)urb->context;
362 carl9170_tx_drop(ar, skb);
363 carl9170_tx_callback(ar, skb);
368 static void carl9170_usb_tasklet(unsigned long data)
370 struct ar9170 *ar = (struct ar9170 *) data;
372 if (!IS_INITIALIZED(ar))
375 carl9170_usb_rx_work(ar);
378 * Strictly speaking: The tx scheduler is not part of the USB system.
379 * But the rx worker returns frames back to the mac80211-stack and
380 * this is the _perfect_ place to generate the next transmissions.
383 carl9170_tx_scheduler(ar);
386 static void carl9170_usb_rx_complete(struct urb *urb)
388 struct ar9170 *ar = (struct ar9170 *)urb->context;
391 if (WARN_ON_ONCE(!ar))
394 atomic_dec(&ar->rx_anch_urbs);
396 switch (urb->status) {
399 usb_anchor_urb(urb, &ar->rx_work);
400 atomic_inc(&ar->rx_work_urbs);
407 /* handle disconnect events*/
411 /* handle all other errors */
412 usb_anchor_urb(urb, &ar->rx_pool);
413 atomic_inc(&ar->rx_pool_urbs);
417 err = carl9170_usb_submit_rx_urb(ar, GFP_ATOMIC);
420 * usb_submit_rx_urb reported a problem.
421 * In case this is due to a rx buffer shortage,
422 * elevate the tasklet worker priority to
423 * the highest available level.
425 tasklet_hi_schedule(&ar->usb_tasklet);
427 if (atomic_read(&ar->rx_anch_urbs) == 0) {
429 * The system is too slow to cope with
430 * the enormous workload. We have simply
431 * run out of active rx urbs and this
432 * unfortunatly leads to an unpredictable
436 carl9170_restart(ar, CARL9170_RR_SLOW_SYSTEM);
440 * Using anything less than _high_ priority absolutely
441 * kills the rx performance my UP-System...
443 tasklet_hi_schedule(&ar->usb_tasklet);
447 static struct urb *carl9170_usb_alloc_rx_urb(struct ar9170 *ar, gfp_t gfp)
452 buf = kmalloc(ar->fw.rx_size, gfp);
456 urb = usb_alloc_urb(0, gfp);
462 usb_fill_bulk_urb(urb, ar->udev, usb_rcvbulkpipe(ar->udev,
463 AR9170_USB_EP_RX), buf, ar->fw.rx_size,
464 carl9170_usb_rx_complete, ar);
466 urb->transfer_flags |= URB_FREE_BUFFER;
471 static int carl9170_usb_send_rx_irq_urb(struct ar9170 *ar)
473 struct urb *urb = NULL;
477 urb = usb_alloc_urb(0, GFP_KERNEL);
481 ibuf = kmalloc(AR9170_USB_EP_CTRL_MAX, GFP_KERNEL);
485 usb_fill_int_urb(urb, ar->udev, usb_rcvintpipe(ar->udev,
486 AR9170_USB_EP_IRQ), ibuf, AR9170_USB_EP_CTRL_MAX,
487 carl9170_usb_rx_irq_complete, ar, 1);
489 urb->transfer_flags |= URB_FREE_BUFFER;
491 usb_anchor_urb(urb, &ar->rx_anch);
492 err = usb_submit_urb(urb, GFP_KERNEL);
494 usb_unanchor_urb(urb);
501 static int carl9170_usb_init_rx_bulk_urbs(struct ar9170 *ar)
504 int i, err = -EINVAL;
507 * The driver actively maintains a second shadow
508 * pool for inactive, but fully-prepared rx urbs.
510 * The pool should help the driver to master huge
511 * workload spikes without running the risk of
512 * undersupplying the hardware or wasting time by
513 * processing rx data (streams) inside the urb
514 * completion (hardirq context).
516 for (i = 0; i < AR9170_NUM_RX_URBS_POOL; i++) {
517 urb = carl9170_usb_alloc_rx_urb(ar, GFP_KERNEL);
523 usb_anchor_urb(urb, &ar->rx_pool);
524 atomic_inc(&ar->rx_pool_urbs);
528 err = carl9170_usb_submit_rx_urb(ar, GFP_KERNEL);
532 /* the device now waiting for the firmware. */
533 carl9170_set_state_when(ar, CARL9170_STOPPED, CARL9170_IDLE);
538 usb_scuttle_anchored_urbs(&ar->rx_pool);
539 usb_scuttle_anchored_urbs(&ar->rx_work);
540 usb_kill_anchored_urbs(&ar->rx_anch);
544 static int carl9170_usb_flush(struct ar9170 *ar)
549 while ((urb = usb_get_from_anchor(&ar->tx_wait))) {
550 struct sk_buff *skb = (void *)urb->context;
551 carl9170_tx_drop(ar, skb);
552 carl9170_tx_callback(ar, skb);
556 ret = usb_wait_anchor_empty_timeout(&ar->tx_cmd, HZ);
560 /* lets wait a while until the tx - queues are dried out */
561 ret = usb_wait_anchor_empty_timeout(&ar->tx_anch, HZ);
565 usb_kill_anchored_urbs(&ar->tx_anch);
566 carl9170_usb_handle_tx_err(ar);
571 static void carl9170_usb_cancel_urbs(struct ar9170 *ar)
575 carl9170_set_state(ar, CARL9170_UNKNOWN_STATE);
577 err = carl9170_usb_flush(ar);
579 dev_err(&ar->udev->dev, "stuck tx urbs!\n");
581 usb_poison_anchored_urbs(&ar->tx_anch);
582 carl9170_usb_handle_tx_err(ar);
583 usb_poison_anchored_urbs(&ar->rx_anch);
585 tasklet_kill(&ar->usb_tasklet);
587 usb_scuttle_anchored_urbs(&ar->rx_work);
588 usb_scuttle_anchored_urbs(&ar->rx_pool);
589 usb_scuttle_anchored_urbs(&ar->tx_cmd);
592 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
598 if (!IS_INITIALIZED(ar)) {
603 if (WARN_ON(cmd->hdr.len > CARL9170_MAX_CMD_LEN - 4)) {
608 urb = usb_alloc_urb(0, GFP_ATOMIC);
614 usb_fill_int_urb(urb, ar->udev, usb_sndintpipe(ar->udev,
615 AR9170_USB_EP_CMD), cmd, cmd->hdr.len + 4,
616 carl9170_usb_cmd_complete, ar, 1);
619 urb->transfer_flags |= URB_FREE_BUFFER;
621 usb_anchor_urb(urb, &ar->tx_cmd);
624 return carl9170_usb_submit_cmd_urb(ar);
633 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids cmd,
634 unsigned int plen, void *payload, unsigned int outlen, void *out)
638 if (!IS_ACCEPTING_CMD(ar))
641 if (!(cmd & CARL9170_CMD_ASYNC_FLAG))
644 ar->cmd.hdr.len = plen;
645 ar->cmd.hdr.cmd = cmd;
646 /* writing multiple regs fills this buffer already */
647 if (plen && payload != (u8 *)(ar->cmd.data))
648 memcpy(ar->cmd.data, payload, plen);
650 spin_lock_bh(&ar->cmd_lock);
651 ar->readbuf = (u8 *)out;
652 ar->readlen = outlen;
653 spin_unlock_bh(&ar->cmd_lock);
655 err = __carl9170_exec_cmd(ar, &ar->cmd, false);
657 if (!(cmd & CARL9170_CMD_ASYNC_FLAG)) {
658 err = wait_for_completion_timeout(&ar->cmd_wait, HZ);
664 if (ar->readlen != outlen) {
673 /* Maybe the device was removed in the moment we were waiting? */
674 if (IS_STARTED(ar)) {
675 dev_err(&ar->udev->dev, "no command feedback "
676 "received (%d).\n", err);
678 /* provide some maybe useful debug information */
679 print_hex_dump_bytes("carl9170 cmd: ", DUMP_PREFIX_NONE,
682 carl9170_restart(ar, CARL9170_RR_COMMAND_TIMEOUT);
685 /* invalidate to avoid completing the next command prematurely */
686 spin_lock_bh(&ar->cmd_lock);
689 spin_unlock_bh(&ar->cmd_lock);
694 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb)
697 struct ar9170_stream *tx_stream;
704 urb = usb_alloc_urb(0, GFP_ATOMIC);
708 if (ar->fw.tx_stream) {
709 tx_stream = (void *) (skb->data - sizeof(*tx_stream));
711 len = skb->len + sizeof(*tx_stream);
712 tx_stream->length = cpu_to_le16(len);
713 tx_stream->tag = cpu_to_le16(AR9170_TX_STREAM_TAG);
720 usb_fill_bulk_urb(urb, ar->udev, usb_sndbulkpipe(ar->udev,
721 AR9170_USB_EP_TX), data, len,
722 carl9170_usb_tx_data_complete, skb);
724 urb->transfer_flags |= URB_ZERO_PACKET;
726 usb_anchor_urb(urb, &ar->tx_wait);
730 carl9170_usb_submit_data_urb(ar);
734 carl9170_tx_drop(ar, skb);
735 carl9170_tx_callback(ar, skb);
738 static void carl9170_release_firmware(struct ar9170 *ar)
741 release_firmware(ar->fw.fw);
742 memset(&ar->fw, 0, sizeof(ar->fw));
746 void carl9170_usb_stop(struct ar9170 *ar)
750 carl9170_set_state_when(ar, CARL9170_IDLE, CARL9170_STOPPED);
752 ret = carl9170_usb_flush(ar);
754 dev_err(&ar->udev->dev, "kill pending tx urbs.\n");
756 usb_poison_anchored_urbs(&ar->tx_anch);
757 carl9170_usb_handle_tx_err(ar);
759 /* kill any pending command */
760 spin_lock_bh(&ar->cmd_lock);
762 spin_unlock_bh(&ar->cmd_lock);
763 complete_all(&ar->cmd_wait);
765 /* This is required to prevent an early completion on _start */
766 INIT_COMPLETION(ar->cmd_wait);
770 * So far we freed all tx urbs, but we won't dare to touch any rx urbs.
771 * Else we would end up with a unresponsive device...
775 int carl9170_usb_open(struct ar9170 *ar)
777 usb_unpoison_anchored_urbs(&ar->tx_anch);
779 carl9170_set_state_when(ar, CARL9170_STOPPED, CARL9170_IDLE);
783 static int carl9170_usb_load_firmware(struct ar9170 *ar)
787 unsigned int transfer;
792 buf = kmalloc(4096, GFP_KERNEL);
798 data = ar->fw.fw->data;
799 len = ar->fw.fw->size;
800 addr = ar->fw.address;
802 /* this removes the miniboot image */
803 data += ar->fw.offset;
804 len -= ar->fw.offset;
807 transfer = min_t(unsigned int, len, 4096u);
808 memcpy(buf, data, transfer);
810 err = usb_control_msg(ar->udev, usb_sndctrlpipe(ar->udev, 0),
811 0x30 /* FW DL */, 0x40 | USB_DIR_OUT,
812 addr >> 8, 0, buf, transfer, 100);
825 err = usb_control_msg(ar->udev, usb_sndctrlpipe(ar->udev, 0),
826 0x31 /* FW DL COMPLETE */,
827 0x40 | USB_DIR_OUT, 0, 0, NULL, 0, 200);
829 if (wait_for_completion_timeout(&ar->fw_boot_wait, HZ) == 0) {
834 err = carl9170_echo_test(ar, 0x4a110123);
838 /* firmware restarts cmd counter */
844 dev_err(&ar->udev->dev, "firmware upload failed (%d).\n", err);
848 int carl9170_usb_restart(struct ar9170 *ar)
852 if (ar->intf->condition != USB_INTERFACE_BOUND)
855 /* Disable command response sequence counter. */
858 err = carl9170_reboot(ar);
860 carl9170_usb_stop(ar);
865 tasklet_schedule(&ar->usb_tasklet);
867 /* The reboot procedure can take quite a while to complete. */
870 err = carl9170_usb_open(ar);
874 err = carl9170_usb_load_firmware(ar);
881 carl9170_usb_cancel_urbs(ar);
885 void carl9170_usb_reset(struct ar9170 *ar)
888 * This is the last resort to get the device going again
889 * without any *user replugging action*.
891 * But there is a catch: usb_reset really is like a physical
892 * *reconnect*. The mac80211 state will be lost in the process.
893 * Therefore a userspace application, which is monitoring
894 * the link must step in.
896 carl9170_usb_cancel_urbs(ar);
898 carl9170_usb_stop(ar);
900 usb_queue_reset_device(ar->intf);
903 static int carl9170_usb_init_device(struct ar9170 *ar)
907 err = carl9170_usb_send_rx_irq_urb(ar);
911 err = carl9170_usb_init_rx_bulk_urbs(ar);
915 mutex_lock(&ar->mutex);
916 err = carl9170_usb_load_firmware(ar);
917 mutex_unlock(&ar->mutex);
924 carl9170_usb_cancel_urbs(ar);
930 static void carl9170_usb_firmware_failed(struct ar9170 *ar)
932 struct device *parent = ar->udev->dev.parent;
933 struct usb_device *udev;
936 * Store a copy of the usb_device pointer locally.
937 * This is because device_release_driver initiates
938 * carl9170_usb_disconnect, which in turn frees our
939 * driver context (ar).
943 complete(&ar->fw_load_wait);
945 /* unbind anything failed */
949 device_release_driver(&udev->dev);
951 device_unlock(parent);
956 static void carl9170_usb_firmware_finish(struct ar9170 *ar)
960 err = carl9170_parse_firmware(ar);
964 err = carl9170_usb_init_device(ar);
968 err = carl9170_usb_open(ar);
972 err = carl9170_register(ar);
974 carl9170_usb_stop(ar);
978 complete(&ar->fw_load_wait);
979 usb_put_dev(ar->udev);
983 carl9170_usb_cancel_urbs(ar);
986 carl9170_release_firmware(ar);
987 carl9170_usb_firmware_failed(ar);
990 static void carl9170_usb_firmware_step2(const struct firmware *fw,
993 struct ar9170 *ar = context;
997 carl9170_usb_firmware_finish(ar);
1001 dev_err(&ar->udev->dev, "firmware not found.\n");
1002 carl9170_usb_firmware_failed(ar);
1005 static int carl9170_usb_probe(struct usb_interface *intf,
1006 const struct usb_device_id *id)
1009 struct usb_device *udev;
1012 err = usb_reset_device(interface_to_usbdev(intf));
1016 ar = carl9170_alloc(sizeof(*ar));
1020 udev = interface_to_usbdev(intf);
1024 ar->features = id->driver_info;
1026 usb_set_intfdata(intf, ar);
1027 SET_IEEE80211_DEV(ar->hw, &intf->dev);
1029 init_usb_anchor(&ar->rx_anch);
1030 init_usb_anchor(&ar->rx_pool);
1031 init_usb_anchor(&ar->rx_work);
1032 init_usb_anchor(&ar->tx_wait);
1033 init_usb_anchor(&ar->tx_anch);
1034 init_usb_anchor(&ar->tx_cmd);
1035 init_usb_anchor(&ar->tx_err);
1036 init_completion(&ar->cmd_wait);
1037 init_completion(&ar->fw_boot_wait);
1038 init_completion(&ar->fw_load_wait);
1039 tasklet_init(&ar->usb_tasklet, carl9170_usb_tasklet,
1042 atomic_set(&ar->tx_cmd_urbs, 0);
1043 atomic_set(&ar->tx_anch_urbs, 0);
1044 atomic_set(&ar->rx_work_urbs, 0);
1045 atomic_set(&ar->rx_anch_urbs, 0);
1046 atomic_set(&ar->rx_pool_urbs, 0);
1049 usb_get_dev(ar->udev);
1051 carl9170_set_state(ar, CARL9170_STOPPED);
1053 return request_firmware_nowait(THIS_MODULE, 1, CARL9170FW_NAME,
1054 &ar->udev->dev, GFP_KERNEL, ar, carl9170_usb_firmware_step2);
1057 static void carl9170_usb_disconnect(struct usb_interface *intf)
1059 struct ar9170 *ar = usb_get_intfdata(intf);
1060 struct usb_device *udev;
1066 wait_for_completion(&ar->fw_load_wait);
1068 if (IS_INITIALIZED(ar)) {
1069 carl9170_reboot(ar);
1070 carl9170_usb_stop(ar);
1073 carl9170_usb_cancel_urbs(ar);
1074 carl9170_unregister(ar);
1076 usb_set_intfdata(intf, NULL);
1078 carl9170_release_firmware(ar);
1084 static int carl9170_usb_suspend(struct usb_interface *intf,
1085 pm_message_t message)
1087 struct ar9170 *ar = usb_get_intfdata(intf);
1092 carl9170_usb_cancel_urbs(ar);
1095 * firmware automatically reboots for usb suspend.
1101 static int carl9170_usb_resume(struct usb_interface *intf)
1103 struct ar9170 *ar = usb_get_intfdata(intf);
1109 usb_unpoison_anchored_urbs(&ar->rx_anch);
1111 err = carl9170_usb_init_device(ar);
1115 err = carl9170_usb_open(ar);
1122 carl9170_usb_cancel_urbs(ar);
1126 #endif /* CONFIG_PM */
1128 static struct usb_driver carl9170_driver = {
1129 .name = KBUILD_MODNAME,
1130 .probe = carl9170_usb_probe,
1131 .disconnect = carl9170_usb_disconnect,
1132 .id_table = carl9170_usb_ids,
1135 .suspend = carl9170_usb_suspend,
1136 .resume = carl9170_usb_resume,
1137 #endif /* CONFIG_PM */
1140 static int __init carl9170_usb_init(void)
1142 return usb_register(&carl9170_driver);
1145 static void __exit carl9170_usb_exit(void)
1147 usb_deregister(&carl9170_driver);
1150 module_init(carl9170_usb_init);
1151 module_exit(carl9170_usb_exit);