+++ /dev/null
-/*
- * 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");
-
-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 = 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 = 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);
git.openpandora.org / pandora-kernel.git / blobdiff