mirror of https://gitee.com/openkylin/linux.git
ar9170: ar9170: USB frontend driver
USB frontend driver code for Atheros' AR9170 modules. Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter
John W. Linville
parent
6cb1935353
commit
b63a2cb304
|
|
@ -0,0 +1,747 @@
|
|||
/*
|
||||
* 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("Christian Lamparter <chunkeey@web.de>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("USB Driver for Atheros AR9170 based devices");
|
||||
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) },
|
||||
/* 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) },
|
||||
/* 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_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_unlock;
|
||||
|
||||
err = ar9170_usb_request_firmware(aru);
|
||||
if (err)
|
||||
goto err_unlock;
|
||||
|
||||
err = ar9170_usb_alloc_rx_irq_urb(aru);
|
||||
if (err)
|
||||
goto err_freefw;
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
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_unlock:
|
||||
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);
|
||||
}
|
||||
|
||||
static struct usb_driver ar9170_driver = {
|
||||
.name = "ar9170usb",
|
||||
.probe = ar9170_usb_probe,
|
||||
.disconnect = ar9170_usb_disconnect,
|
||||
.id_table = ar9170_usb_ids,
|
||||
.soft_unbind = 1,
|
||||
};
|
||||
|
||||
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);
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
/*
|
||||
* Atheros AR9170 USB driver
|
||||
*
|
||||
* Driver specific definitions
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#ifndef __USB_H
|
||||
#define __USB_H
|
||||
|
||||
#include <linux/usb.h>
|
||||
#include <linux/completion.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/leds.h>
|
||||
#include <net/wireless.h>
|
||||
#include <net/mac80211.h>
|
||||
#include <linux/firmware.h>
|
||||
#include "eeprom.h"
|
||||
#include "hw.h"
|
||||
#include "ar9170.h"
|
||||
|
||||
#define AR9170_NUM_RX_URBS 16
|
||||
|
||||
struct firmware;
|
||||
|
||||
struct ar9170_usb {
|
||||
struct ar9170 common;
|
||||
struct usb_device *udev;
|
||||
struct usb_interface *intf;
|
||||
|
||||
struct usb_anchor rx_submitted;
|
||||
struct usb_anchor tx_submitted;
|
||||
|
||||
spinlock_t cmdlock;
|
||||
struct completion cmd_wait;
|
||||
int readlen;
|
||||
u8 *readbuf;
|
||||
|
||||
const struct firmware *init_values;
|
||||
const struct firmware *firmware;
|
||||
};
|
||||
|
||||
#endif /* __USB_H */
|
||||
Loading…
Reference in New Issue