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OpenCloudOS-Kernel/drivers/net/wireless/ath/ar9170/usb.c

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/*
* 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");
MODULE_FIRMWARE("ar9170-1.fw");
MODULE_FIRMWARE("ar9170-2.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);
}
usb_free_urb(urb);
}
static void ar9170_usb_tx_urb_complete_frame(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 (unlikely(!aru)) {
dev_kfree_skb_irq(skb);
return ;
}
atomic_dec(&aru->tx_submitted_urbs);
ar9170_tx_callback(&aru->common, skb);
ar9170_usb_submit_urb(aru);
}
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;
}
ar9170_handle_command_response(&aru->common, 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_free_coherent(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 (unlikely(err)) {
usb_unanchor_urb(urb);
goto free;
}
return ;
free:
dev_kfree_skb_irq(skb);
}
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_alloc_coherent(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_free_coherent(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 int ar9170_usb_flush(struct ar9170 *ar)
{
struct ar9170_usb *aru = (void *) ar;
struct urb *urb;
int ret, err = 0;
if (IS_STARTED(ar))
aru->common.state = AR9170_IDLE;
usb_wait_anchor_empty_timeout(&aru->tx_pending,
msecs_to_jiffies(800));
while ((urb = usb_get_from_anchor(&aru->tx_pending))) {
ar9170_tx_callback(&aru->common, (void *) urb->context);
usb_free_urb(urb);
}
/* lets wait a while until the tx - queues are dried out */
ret = usb_wait_anchor_empty_timeout(&aru->tx_submitted,
msecs_to_jiffies(100));
if (ret == 0)
err = -ETIMEDOUT;
usb_kill_anchored_urbs(&aru->tx_submitted);
if (IS_ACCEPTING_CMD(ar))
aru->common.state = AR9170_STARTED;
return err;
}
static void ar9170_usb_cancel_urbs(struct ar9170_usb *aru)
{
int err;
aru->common.state = AR9170_UNKNOWN_STATE;
err = ar9170_usb_flush(&aru->common);
if (err)
dev_err(&aru->udev->dev, "stuck 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_sndintpipe(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 (unlikely(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 (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)
{
struct ar9170_usb *aru = (struct ar9170_usb *) ar;
struct urb *urb;
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,
ar9170_usb_tx_urb_complete_frame, skb);
urb->transfer_flags |= URB_ZERO_PACKET;
usb_anchor_urb(urb, &aru->tx_pending);
aru->tx_pending_urbs++;
usb_free_urb(urb);
ar9170_usb_submit_urb(aru);
return 0;
}
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 (unlikely(!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_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 void ar9170_usb_firmware_failed(struct ar9170_usb *aru)
{
struct device *parent = aru->udev->dev.parent;
struct usb_device *udev;
/*
* Store a copy of the usb_device pointer locally.
* This is because device_release_driver initiates
* ar9170_usb_disconnect, which in turn frees our
* driver context (aru).
*/
udev = aru->udev;
complete(&aru->firmware_loading_complete);
/* unbind anything failed */
if (parent)
device_lock(parent);
device_release_driver(&udev->dev);
if (parent)
device_unlock(parent);
usb_put_dev(udev);
}
static void ar9170_usb_firmware_finish(const struct firmware *fw, void *context)
{
struct ar9170_usb *aru = context;
int err;
aru->firmware = fw;
if (!fw) {
dev_err(&aru->udev->dev, "firmware file not found.\n");
goto err_freefw;
}
err = ar9170_usb_init_device(aru);
if (err)
goto err_freefw;
err = ar9170_usb_open(&aru->common);
if (err)
goto err_unrx;
err = ar9170_register(&aru->common, &aru->udev->dev);
ar9170_usb_stop(&aru->common);
if (err)
goto err_unrx;
complete(&aru->firmware_loading_complete);
usb_put_dev(aru->udev);
return;
err_unrx:
ar9170_usb_cancel_urbs(aru);
err_freefw:
ar9170_usb_firmware_failed(aru);
}
static void ar9170_usb_firmware_inits(const struct firmware *fw,
void *context)
{
struct ar9170_usb *aru = context;
int err;
if (!fw) {
dev_err(&aru->udev->dev, "file with init values not found.\n");
ar9170_usb_firmware_failed(aru);
return;
}
aru->init_values = fw;
/* ok so we have the init values -- get code for two-stage */
err = request_firmware_nowait(THIS_MODULE, 1, "ar9170-2.fw",
&aru->udev->dev, GFP_KERNEL, aru,
ar9170_usb_firmware_finish);
if (err)
ar9170_usb_firmware_failed(aru);
}
static void ar9170_usb_firmware_step2(const struct firmware *fw, void *context)
{
struct ar9170_usb *aru = context;
int err;
if (fw) {
ar9170_usb_firmware_finish(fw, context);
return;
}
if (aru->req_one_stage_fw) {
dev_err(&aru->udev->dev, "ar9170.fw firmware file "
"not found and is required for this device\n");
ar9170_usb_firmware_failed(aru);
return;
}
dev_err(&aru->udev->dev, "ar9170.fw firmware file "
"not found, trying old firmware...\n");
err = request_firmware_nowait(THIS_MODULE, 1, "ar9170-1.fw",
&aru->udev->dev, GFP_KERNEL, aru,
ar9170_usb_firmware_inits);
if (err)
ar9170_usb_firmware_failed(aru);
}
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);
init_completion(&aru->firmware_loading_complete);
spin_lock_init(&aru->tx_urb_lock);
aru->tx_pending_urbs = 0;
atomic_set(&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;
usb_get_dev(aru->udev);
return request_firmware_nowait(THIS_MODULE, 1, "ar9170.fw",
&aru->udev->dev, GFP_KERNEL, aru,
ar9170_usb_firmware_step2);
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;
wait_for_completion(&aru->firmware_loading_complete);
ar9170_unregister(&aru->common);
ar9170_usb_cancel_urbs(aru);
usb_put_dev(aru->udev);
usb_set_intfdata(intf, NULL);
ieee80211_free_hw(aru->common.hw);
release_firmware(aru->init_values);
release_firmware(aru->firmware);
}
#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);
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