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path: root/drivers/net/wireless/ath/ar9170/usb.c
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Diffstat (limited to 'drivers/net/wireless/ath/ar9170/usb.c')
-rw-r--r--drivers/net/wireless/ath/ar9170/usb.c822
1 files changed, 822 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ar9170/usb.c b/drivers/net/wireless/ath/ar9170/usb.c
new file mode 100644
index 00000000000..fddda477095
--- /dev/null
+++ b/drivers/net/wireless/ath/ar9170/usb.c
@@ -0,0 +1,822 @@
+/*
+ * 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/usb.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.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("ar9170-1.fw");
+MODULE_FIRMWARE("ar9170-2.fw");
+
+static struct usb_device_id ar9170_usb_ids[] = {
+ /* Atheros 9170 */
+ { USB_DEVICE(0x0cf3, 0x9170) },
+ /* Atheros TG121N */
+ { USB_DEVICE(0x0cf3, 0x1001) },
+ /* Cace Airpcap NX */
+ { USB_DEVICE(0xcace, 0x0300) },
+ /* D-Link DWA 160A */
+ { USB_DEVICE(0x07d1, 0x3c10) },
+ /* Netgear WNDA3100 */
+ { USB_DEVICE(0x0846, 0x9010) },
+ /* Netgear WN111 v2 */
+ { USB_DEVICE(0x0846, 0x9001) },
+ /* Zydas ZD1221 */
+ { USB_DEVICE(0x0ace, 0x1221) },
+ /* ZyXEL NWD271N */
+ { USB_DEVICE(0x0586, 0x3417) },
+ /* Z-Com UB81 BG */
+ { USB_DEVICE(0x0cde, 0x0023) },
+ /* Z-Com UB82 ABG */
+ { USB_DEVICE(0x0cde, 0x0026) },
+ /* Arcadyan WN7512 */
+ { USB_DEVICE(0x083a, 0xf522) },
+ /* Planex GWUS300 */
+ { USB_DEVICE(0x2019, 0x5304) },
+ /* IO-Data WNGDNUS2 */
+ { USB_DEVICE(0x04bb, 0x093f) },
+
+ /* terminate */
+ {}
+};
+MODULE_DEVICE_TABLE(usb, ar9170_usb_ids);
+
+static void ar9170_usb_tx_urb_complete_free(struct urb *urb)
+{
+ struct sk_buff *skb = urb->context;
+ struct ar9170_usb *aru = (struct ar9170_usb *)
+ usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
+
+ if (!aru) {
+ dev_kfree_skb_irq(skb);
+ return ;
+ }
+
+ ar9170_handle_tx_status(&aru->common, skb, false,
+ AR9170_TX_STATUS_COMPLETE);
+}
+
+static void ar9170_usb_tx_urb_complete(struct urb *urb)
+{
+}
+
+static void ar9170_usb_irq_completed(struct urb *urb)
+{
+ struct ar9170_usb *aru = urb->context;
+
+ switch (urb->status) {
+ /* everything is fine */
+ case 0:
+ break;
+
+ /* disconnect */
+ case -ENOENT:
+ case -ECONNRESET:
+ case -ENODEV:
+ case -ESHUTDOWN:
+ goto free;
+
+ default:
+ goto resubmit;
+ }
+
+ print_hex_dump_bytes("ar9170 irq: ", DUMP_PREFIX_OFFSET,
+ urb->transfer_buffer, urb->actual_length);
+
+resubmit:
+ usb_anchor_urb(urb, &aru->rx_submitted);
+ if (usb_submit_urb(urb, GFP_ATOMIC)) {
+ usb_unanchor_urb(urb);
+ goto free;
+ }
+
+ return;
+
+free:
+ usb_buffer_free(aru->udev, 64, urb->transfer_buffer, urb->transfer_dma);
+}
+
+static void ar9170_usb_rx_completed(struct urb *urb)
+{
+ struct sk_buff *skb = urb->context;
+ struct ar9170_usb *aru = (struct ar9170_usb *)
+ usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
+ int err;
+
+ if (!aru)
+ goto free;
+
+ switch (urb->status) {
+ /* everything is fine */
+ case 0:
+ break;
+
+ /* disconnect */
+ case -ENOENT:
+ case -ECONNRESET:
+ case -ENODEV:
+ case -ESHUTDOWN:
+ goto free;
+
+ default:
+ goto resubmit;
+ }
+
+ skb_put(skb, urb->actual_length);
+ ar9170_rx(&aru->common, skb);
+
+resubmit:
+ skb_reset_tail_pointer(skb);
+ skb_trim(skb, 0);
+
+ usb_anchor_urb(urb, &aru->rx_submitted);
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err) {
+ usb_unanchor_urb(urb);
+ dev_kfree_skb_irq(skb);
+ }
+
+ return ;
+
+free:
+ dev_kfree_skb_irq(skb);
+ return;
+}
+
+static int ar9170_usb_prep_rx_urb(struct ar9170_usb *aru,
+ struct urb *urb, gfp_t gfp)
+{
+ struct sk_buff *skb;
+
+ skb = __dev_alloc_skb(AR9170_MAX_RX_BUFFER_SIZE + 32, gfp);
+ if (!skb)
+ return -ENOMEM;
+
+ /* reserve some space for mac80211's radiotap */
+ skb_reserve(skb, 32);
+
+ usb_fill_bulk_urb(urb, aru->udev,
+ usb_rcvbulkpipe(aru->udev, AR9170_EP_RX),
+ skb->data, min(skb_tailroom(skb),
+ AR9170_MAX_RX_BUFFER_SIZE),
+ ar9170_usb_rx_completed, skb);
+
+ return 0;
+}
+
+static int ar9170_usb_alloc_rx_irq_urb(struct ar9170_usb *aru)
+{
+ struct urb *urb = NULL;
+ void *ibuf;
+ int err = -ENOMEM;
+
+ /* initialize interrupt endpoint */
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ goto out;
+
+ ibuf = usb_buffer_alloc(aru->udev, 64, GFP_KERNEL, &urb->transfer_dma);
+ if (!ibuf)
+ goto out;
+
+ usb_fill_int_urb(urb, aru->udev,
+ usb_rcvintpipe(aru->udev, AR9170_EP_IRQ), ibuf,
+ 64, ar9170_usb_irq_completed, aru, 1);
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ usb_anchor_urb(urb, &aru->rx_submitted);
+ err = usb_submit_urb(urb, GFP_KERNEL);
+ if (err) {
+ usb_unanchor_urb(urb);
+ usb_buffer_free(aru->udev, 64, urb->transfer_buffer,
+ urb->transfer_dma);
+ }
+
+out:
+ usb_free_urb(urb);
+ return err;
+}
+
+static int ar9170_usb_alloc_rx_bulk_urbs(struct ar9170_usb *aru)
+{
+ struct urb *urb;
+ int i;
+ int err = -EINVAL;
+
+ for (i = 0; i < AR9170_NUM_RX_URBS; i++) {
+ err = -ENOMEM;
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ goto err_out;
+
+ err = ar9170_usb_prep_rx_urb(aru, urb, GFP_KERNEL);
+ if (err) {
+ usb_free_urb(urb);
+ goto err_out;
+ }
+
+ usb_anchor_urb(urb, &aru->rx_submitted);
+ err = usb_submit_urb(urb, GFP_KERNEL);
+ if (err) {
+ usb_unanchor_urb(urb);
+ dev_kfree_skb_any((void *) urb->transfer_buffer);
+ usb_free_urb(urb);
+ goto err_out;
+ }
+ usb_free_urb(urb);
+ }
+
+ /* the device now waiting for a firmware. */
+ aru->common.state = AR9170_IDLE;
+ return 0;
+
+err_out:
+
+ usb_kill_anchored_urbs(&aru->rx_submitted);
+ return err;
+}
+
+static void ar9170_usb_cancel_urbs(struct ar9170_usb *aru)
+{
+ int ret;
+
+ aru->common.state = AR9170_UNKNOWN_STATE;
+
+ usb_unlink_anchored_urbs(&aru->tx_submitted);
+
+ /* give the LED OFF command and the deauth frame a chance to air. */
+ ret = usb_wait_anchor_empty_timeout(&aru->tx_submitted,
+ msecs_to_jiffies(100));
+ if (ret == 0)
+ dev_err(&aru->udev->dev, "kill pending tx urbs.\n");
+ usb_poison_anchored_urbs(&aru->tx_submitted);
+
+ usb_poison_anchored_urbs(&aru->rx_submitted);
+}
+
+static int ar9170_usb_exec_cmd(struct ar9170 *ar, enum ar9170_cmd cmd,
+ unsigned int plen, void *payload,
+ unsigned int outlen, void *out)
+{
+ struct ar9170_usb *aru = (void *) ar;
+ struct urb *urb = NULL;
+ unsigned long flags;
+ int err = -ENOMEM;
+
+ if (unlikely(!IS_ACCEPTING_CMD(ar)))
+ return -EPERM;
+
+ if (WARN_ON(plen > AR9170_MAX_CMD_LEN - 4))
+ return -EINVAL;
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (unlikely(!urb))
+ goto err_free;
+
+ ar->cmdbuf[0] = cpu_to_le32(plen);
+ ar->cmdbuf[0] |= cpu_to_le32(cmd << 8);
+ /* writing multiple regs fills this buffer already */
+ if (plen && payload != (u8 *)(&ar->cmdbuf[1]))
+ memcpy(&ar->cmdbuf[1], payload, plen);
+
+ spin_lock_irqsave(&aru->common.cmdlock, flags);
+ aru->readbuf = (u8 *)out;
+ aru->readlen = outlen;
+ spin_unlock_irqrestore(&aru->common.cmdlock, flags);
+
+ usb_fill_int_urb(urb, aru->udev,
+ usb_sndbulkpipe(aru->udev, AR9170_EP_CMD),
+ aru->common.cmdbuf, plen + 4,
+ ar9170_usb_tx_urb_complete, NULL, 1);
+
+ usb_anchor_urb(urb, &aru->tx_submitted);
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err) {
+ usb_unanchor_urb(urb);
+ usb_free_urb(urb);
+ goto err_unbuf;
+ }
+ usb_free_urb(urb);
+
+ err = wait_for_completion_timeout(&aru->cmd_wait, HZ);
+ if (err == 0) {
+ err = -ETIMEDOUT;
+ goto err_unbuf;
+ }
+
+ if (outlen >= 0 && aru->readlen != outlen) {
+ err = -EMSGSIZE;
+ goto err_unbuf;
+ }
+
+ return 0;
+
+err_unbuf:
+ /* Maybe the device was removed in the second we were waiting? */
+ if (IS_STARTED(ar)) {
+ dev_err(&aru->udev->dev, "no command feedback "
+ "received (%d).\n", err);
+
+ /* provide some maybe useful debug information */
+ print_hex_dump_bytes("ar9170 cmd: ", DUMP_PREFIX_NONE,
+ aru->common.cmdbuf, plen + 4);
+ dump_stack();
+ }
+
+ /* invalidate to avoid completing the next prematurely */
+ spin_lock_irqsave(&aru->common.cmdlock, flags);
+ aru->readbuf = NULL;
+ aru->readlen = 0;
+ spin_unlock_irqrestore(&aru->common.cmdlock, flags);
+
+err_free:
+
+ return err;
+}
+
+static int ar9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb,
+ bool txstatus_needed, unsigned int extra_len)
+{
+ struct ar9170_usb *aru = (struct ar9170_usb *) ar;
+ struct urb *urb;
+ int err;
+
+ if (unlikely(!IS_STARTED(ar))) {
+ /* Seriously, what were you drink... err... thinking!? */
+ return -EPERM;
+ }
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (unlikely(!urb))
+ return -ENOMEM;
+
+ usb_fill_bulk_urb(urb, aru->udev,
+ usb_sndbulkpipe(aru->udev, AR9170_EP_TX),
+ skb->data, skb->len + extra_len, (txstatus_needed ?
+ ar9170_usb_tx_urb_complete :
+ ar9170_usb_tx_urb_complete_free), skb);
+ urb->transfer_flags |= URB_ZERO_PACKET;
+
+ usb_anchor_urb(urb, &aru->tx_submitted);
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (unlikely(err))
+ usb_unanchor_urb(urb);
+
+ usb_free_urb(urb);
+ return err;
+}
+
+static void ar9170_usb_callback_cmd(struct ar9170 *ar, u32 len , void *buffer)
+{
+ struct ar9170_usb *aru = (void *) ar;
+ unsigned long flags;
+ u32 in, out;
+
+ if (!buffer)
+ return ;
+
+ in = le32_to_cpup((__le32 *)buffer);
+ out = le32_to_cpu(ar->cmdbuf[0]);
+
+ /* mask off length byte */
+ 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->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;
+
+ /* 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;
+ }
+
+ /* 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;
+
+ /* lets wait a while until the tx - queues are dried out */
+ ret = usb_wait_anchor_empty_timeout(&aru->tx_submitted,
+ msecs_to_jiffies(1000));
+ if (ret == 0)
+ 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 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;
+
+ usb_set_intfdata(intf, aru);
+ SET_IEEE80211_DEV(ar->hw, &udev->dev);
+
+ init_usb_anchor(&aru->rx_submitted);
+ init_usb_anchor(&aru->tx_submitted);
+ init_completion(&aru->cmd_wait);
+
+ aru->common.stop = ar9170_usb_stop;
+ 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;
+
+ 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);
+
+ /*
+ * FIXME: firmware upload will fail on resume.
+ * but this is better than a hang!
+ */
+
+ 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,
+#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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-06 21:40:08 +0000